use correct python version in maturin ci for aarch64

[matt-codecov]

tested in #54
filed an issue in maturin about it PyO3/maturin#2227

the publish workflow was generated with maturin generate-ci github --pytest so that pytest would be run for each platform. it worked fine for x86_64 and x86, but for aarch64 it failed with an error:

Looking in links: dist
  ERROR: Could not find a version that satisfies the requirement codecov_rs (from versions: none)
  ERROR: No matching distribution found for codecov_rs

(job link)

the tl;dr is that x86_64 and x86 got to use the Python 3.12 version set up earlier in the workflow but aarch64 had to use Python 3.10 because reasons. we set requires-python = ">=3.12" in pyproject.toml so when we tried to install our wheel on 3.10 it refused.

the fix here is to use the deadsnakes PPA to install a newer version of Python

alternatives:

• change pyproject.toml to require python >= 3.10 and make maturin build wheels for older versions
• stop running pytest
• stop building aarch64

we don't really need linux aarch64 support right now but it would be necessary to integrate codecov-rs in a cli or VS Code extension in the future

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.53%. Comparing base (93e59ef) to head (3aa2c1f).
Report is 1 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #55   +/-   ##
=======================================
  Coverage   98.53%   98.53%           
=======================================
  Files          21       21           
  Lines        6775     6775           
=======================================
  Hits         6676     6676           
  Misses         99       99           

Components	Coverage Δ
core	98.61% <ø> (ø)
bindings	79.31% <ø> (ø)
python	100.00% <ø> (ø)

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[Swatinem]

we don't really need linux aarch64 support right now

you would if you install/run precompiled binaries in docker on mac

[Swatinem]

I’m also okay with not running pytest again on the for-publishing binaries, as it runs for development binaries in CI anyway.

[matt-codecov]

the non-publish CI is only linux so it would not have caught that windows tempfile bug