Bump python version

[dklimpel]

Python 3.7 is EOL

Python 3.11 is also the Python version of Synapse in Dockerfile

Max Python version here: 3.10. The upgrade to Python 3.11 seems to need more dependency updates.

      gcc -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -fPIC -Iast27/Include -I/home/runner/work/sygnal/sygnal/.tox/check_codestyle/include -I/opt/hostedtoolcache/Python/3.11.4/x64/include/python3.11 -c ast27/Custom/typed_ast.c -o build/temp.linux-x86_64-cpython-311/ast27/Custom/typed_ast.o
      In file included from ast27/Custom/typed_ast.c:3:
      ast27/Custom/../Include/compile.h:5:10: fatal error: code.h: No such file or directory
          5 | #include "code.h"
            |          ^~~~~~~~
      compilation terminated.
      error: command '/usr/bin/gcc' failed with exit code 1

Possible solutions / causes:

• https://www.mail-archive.com/debian-bugs-dist@lists.debian.org/msg1878635.html
• https://github.com/pre-commit/pre-commit/issues/2850#issuecomment-1519727166

Related to:

• 342

[bradtgmurray]

I'm pretty sure this broke apns configurations, as we pinned back aioapns to an older version that didn't support Python 3.10 here: https://github.com/matrix-org/sygnal/issues/293

│ Error during startup:                                                                                                                                                                                                                                                                                                                                                  │
│ Traceback (most recent call last):                                                                                                                                                                                                                                                                                                                                     │
│   File "/usr/local/lib/python3.10/site-packages/sygnal/sygnal.py", line 228, in start                                                                                                                                                                                                                                                                                  │
│     yield ensureDeferred(self.make_pushkins_then_start())                                                                                                                                                                                                                                                                                                              │
│   File "/usr/local/lib/python3.10/site-packages/twisted/internet/defer.py", line 1374, in ensureDeferred                                                                                                                                                                                                                                                               │
│     return Deferred.fromCoroutine(coro)                                                                                                                                                                                                                                                                                                                                │
│   File "/usr/local/lib/python3.10/site-packages/twisted/internet/defer.py", line 1349, in fromCoroutine                                                                                                                                                                                                                                                                │
│     return _cancellableInlineCallbacks(coro)                                                                                                                                                                                                                                                                                                                           │
│   File "/usr/local/lib/python3.10/site-packages/twisted/internet/defer.py", line 2157, in _cancellableInlineCallbacks                                                                                                                                                                                                                                                  │
│     _inlineCallbacks(None, gen, status, _copy_context())                                                                                                                                                                                                                                                                                                               │
│ --- <exception caught here> ---                                                                                                                                                                                                                                                                                                                                        │
│   File "/usr/local/lib/python3.10/site-packages/sygnal/sygnal.py", line 228, in start                                                                                                                                                                                                                                                                                  │
│     yield ensureDeferred(self.make_pushkins_then_start())                                                                                                                                                                                                                                                                                                              │
│   File "/usr/local/lib/python3.10/site-packages/twisted/internet/defer.py", line 1997, in _inlineCallbacks                                                                                                                                                                                                                                                             │
│     result = context.run(gen.send, result)                                                                                                                                                                                                                                                                                                                             │
│   File "/usr/local/lib/python3.10/site-packages/sygnal/sygnal.py", line 200, in make_pushkins_then_start                                                                                                                                                                                                                                                               │
│     self.pushkins[app_id] = await self._make_pushkin(app_id, app_cfg)                                                                                                                                                                                                                                                                                                  │
│   File "/usr/local/lib/python3.10/site-packages/sygnal/sygnal.py", line 195, in _make_pushkin                                                                                                                                                                                                                                                                          │
│     return await clarse.create(app_name, self, app_config)                                                                                                                                                                                                                                                                                                             │
│   File "/usr/local/lib/python3.10/site-packages/sygnal/notifications.py", line 189, in create                                                                                                                                                                                                                                                                          │
│     return cls(name, sygnal, config)                                                                                                                                                                                                                                                                                                                                   │
│   File "/usr/local/lib/python3.10/site-packages/sygnal/apnspushkin.py", line 191, in __init__                                                                                                                                                                                                                                                                          │
│     self.apns_client = APNs(                                                                                                                                                                                                                                                                                                                                           │
│ builtins.TypeError: APNs.__init__() got an unexpected keyword argument 'loop'                                                                                                                                                                                                                                                                                          │

Do we do something like this other PR in a different project using aioapns to fix it? https://github.com/zulip/zulip/pull/21066/files