Update dependency gunicorn to v21 (master) - autoclosed

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
gunicorn (source)	==20.0.4 -> ==21.2.0

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Release Notes

benoitc/gunicorn (gunicorn)

### [`v21.2.0`](https://togithub.com/benoitc/gunicorn/releases/tag/21.2.0): Gunicorn 21.2.0 has been released [Compare Source](https://togithub.com/benoitc/gunicorn/compare/21.1.0...21.2.0) **Gunicorn 21.2.0 has been released.** This version fix the issue introduced in the threaded worker. Changes: 21.2.0 - 2023-07-19 =================== fix thread worker: revert change considering connection as idle . *** NOTE *** This is fixing the bad file description error. 1. Documentation is available there: https://docs.gunicorn.org/en/stable/news.html 2. Packages: https://pypi.org/project/gunicorn/ ### [`v21.1.0`](https://togithub.com/benoitc/gunicorn/releases/tag/21.1.0): Gunicorn 21.1.0 has been released [Compare Source](https://togithub.com/benoitc/gunicorn/compare/21.0.1...21.1.0) gunicorn 21.1.0 has been released. This version fix the issue introduced in the threaded worker. # 21.1.0 - 2023-07-18 - fix thread worker: fix socket removal from the queuet checkout 21.x ### [`v21.0.1`](https://togithub.com/benoitc/gunicorn/releases/tag/21.0.1): Gunicorn 21 has been released [Compare Source](https://togithub.com/benoitc/gunicorn/compare/21.0.0...21.0.1) Gunicorn 21 is out with miscellaneous changes. Enjoy! We made this release major to start our new release cycle. More info will be provided on our discussion forum. ##### 21.0.1 - 2023-07-17 fix documentation build ##### 21.0.0 - 2023-07-17 support python 3.11 fix gevent and eventlet workers fix threads support (gththread): improve performance and unblock requests SSL: noaw use SSLContext object HTTP parser: miscellaneous fixes remove unecessary setuid calls fix testing improve logging miscellaneous fixes to core engine **Full Changelog**: https://github.com/benoitc/gunicorn/compare/21.0.0...21.0.1 ### [`v21.0.0`](https://togithub.com/benoitc/gunicorn/compare/20.1.0...21.0.0) [Compare Source](https://togithub.com/benoitc/gunicorn/compare/20.1.0...21.0.0) ### [`v20.1.0`](https://togithub.com/benoitc/gunicorn/releases/tag/20.1.0) [Compare Source](https://togithub.com/benoitc/gunicorn/compare/20.0.4...20.1.0) - document WEB_CONCURRENCY is set by, at least, Heroku - capture peername from accept: Avoid calls to getpeername by capturing the peer name returned by accept - log a warning when a worker was terminated due to a signal - fix tornado usage with latest versions of Django - add support for python -m gunicorn - fix systemd socket activation example - allows to set wsgi application in configg file using `wsgi_app` - document `--timeout = 0` - always close a connection when the number of requests exceeds the max requests - Disable keepalive during graceful shutdown - kill tasks in the gthread workers during upgrade - fix latency in gevent worker when accepting new requests - fix file watcher: handle errors when new worker reboot and ensure the list of files is kept - document the default name and path of the configuration file - document how variable impact configuration - document the `$PORT` environment variable - added milliseconds option to request_time in access_log - added PIP requirements to be used for example - remove version from the Server header - fix sendfile: use `socket.sendfile` instead of `os.sendfile` - reloader: use absolute path to prevent empty to prevent0 `InotifyError` when a file is added to the working directory - Add --print-config option to print the resolved settings at startup. - remove the `--log-dict-config` CLI flag because it never had a working format (the `logconfig_dict` setting in configuration files continues to work) \*\* Breaking changes \*\* - minimum version is Python 3.5 - remove version from the Server header \*\* Documentation \*\* \*\* Others \*\* - miscellaneous changes in the code base to be a better citizen with Python 3 - remove dead code - fix documentation generation

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