Drop Python 3.7 support

[yarikoptic]

• Might need Ran pre-commit on everything, black decided to adjust some formatting #721 merged first since resolves problem with deprecation warning on 3.11 which would be relevant here

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (e259f35) 81.97% compared to head (2e761a5) 81.97%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #722   +/-   ##
=======================================
  Coverage   81.97%   81.97%           
=======================================
  Files          41       41           
  Lines        4149     4149           
=======================================
  Hits         3401     3401           
  Misses        748      748           

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[yarikoptic]

@jwodder -- do you have quick clue on why we get older setuptools installed

2023-12-08T22:32:04.1539412Z   × pip subprocess to install build dependencies did not run successfully.
2023-12-08T22:32:04.1540645Z   │ exit code: 2
2023-12-08T22:32:04.1541435Z   ╰─> [110 lines of output]
2023-12-08T22:32:04.1542543Z       Ignoring numpy: markers 'python_version == "3.7"' don't match your environment
2023-12-08T22:32:04.1544530Z       Ignoring numpy: markers 'python_version >= "3.8" and python_version < "3.11"' don't match your environment
2023-12-08T22:32:04.1545934Z       Collecting setuptools==60.5
2023-12-08T22:32:04.1546922Z         Downloading setuptools-60.5.0-py3-none-any.whl (958 kB)
2023-12-08T22:32:04.1548651Z            ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 959.0/959.0 kB 26.6 MB/s eta 0:00:00

so that we get

        File "/tmp/pip-build-env-pb4b294m/overlay/lib/python3.12/site-packages/setuptools/__init__.py", line 10, in <module>
          import distutils.core
      ModuleNotFoundError: No module named 'distutils'

on py 3.12
?

[jwodder]

@yarikoptic This is the fault of pylibjpeg-libjpeg. Its build requirements pin setuptools for some reason, but the actual build failure is due to the fact that these requirements specify exactly numpy 1.23.2 on Python 3.11 and above, and that version (which was released over a year ago) requires distutils to install.

[yarikoptic]

Thank you @jwodder for the analysis!!! my humble attempt pydicom/pylibjpeg-libjpeg#48

[yarikoptic]

meanwhile I will just drop attempt at 3.12 here, so we will just end up dropping 3.7

[github-actions]

🚀 PR was released in v1.0.1 🚀