pip

do not break apart when no common appdata location is set in registry

Ensure selfcheck file inherits directory permissions (#13528)

Merge pull request #13552 from notatallshaw/remove-macos-x86-from-CI

Merge pull request #13554 from notatallshaw/add-earlier-syntax-check-for-`__pip-runner__.py`

Merge pull request #13553 from notatallshaw/remove-references-to-`docs/requirements.txt`