Bring back support for Python 3.9

[cchwala]

[Updated info after merging]: This might not have been necessary since there seems to be a recent tensorflow version for Windows on the conda default channel for Python 3.10, e.g. win-64/tensorflow-2.10.0-mkl_py310hd99672f_0.tar.bz2 here. But there is still a problem with windows install when using poligrain together with pycomlink in one env...

We can support Python 3.9 by just dropping some minor things like zip(... ,strict=True) and usingfrom future import annotations`.

We should do that becausepycomlink requires tensorflow and this is currently only available for Python <= 3.9 on Windows.

• [ ] closes #xxxx (Replace xxxx with the GitHub issue number)
• [ ] Tests added and passed if fixing a bug or adding a new feature
• [ ] All code checks from pre-commit passed
• [ ] Added an entry in the CHANGELOG.md file

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 100.00%. Comparing base (61c4063) to head (57ffa4a). Report is 11 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #42 +/- ## ========================================== Coverage 100.00% 100.00% ========================================== Files 3 4 +1 Lines 43 206 +163 ========================================== + Hits 43 206 +163 ```

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