subprocess: Backport typeshed typings

[tony]

Changes

Backport typings

Backport typings since October 2022 onward: https://github.com/python/typeshed/commits/main/stdlib/subprocess.pyi

• universal_newlines being optional: https://github.com/python/typeshed/blob/1ce1c1ad17c6eb3c5cab19f8dac94af6a5894bca/stdlib/subprocess.pyi

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 62.65%. Comparing base (307e7ab) to head (5b965dc).

Additional details and impacted files

@@ Coverage Diff @@ ## master #461 +/- ## ======================================= Coverage 62.65% 62.65% ======================================= Files 39 39 Lines 3438 3438 Branches 927 927 ======================================= Hits 2154 2154 Misses 764 764 Partials 520 520 

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