Release branch 3.0.0a4

[Pierre-Sassoulas]

• Recognize stub pyi Python files.

  Refs [feature] Being able to use stub pyi files in pylint pylint#4987

[Pierre-Sassoulas]

I moved a lot of issue to 3.0.0a5, I have no idea if any of them were required for the pylint integration to work.

[jacobtylerwalls]

Good. No, all the PRs to get the pylint upgrade to pass were merged a while back.

[jacobtylerwalls]

I'm hoping the pylint primer diffs get more stable with these astroid alphas that have better control of how inference is cached.

[codecov]

Codecov Report

Merging #2197 (6239c8e) into main (cc20cff) will not change coverage.
The diff coverage is 100.00%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2197   +/-   ##
=======================================
  Coverage   92.63%   92.63%           
=======================================
  Files          94       94           
  Lines       10818    10818           
=======================================
  Hits        10021    10021           
  Misses        797      797           

Flag	Coverage Δ
linux	92.39% <100.00%> (ø)
pypy	87.59% <100.00%> (ø)
windows	92.22% <100.00%> (ø)

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Impacted Files	Coverage Δ
astroid/__pkginfo__.py	100.00% <100.00%> (ø)