fix: clean up some things pyupgrade got wrong

Implements the reviews from #3987 and #3988. Special thanks to the
committers and reviewers there.

Co-authored-by: Harry Peach <harrypeach1999@gmail.com>
Co-authored-by: Kamyar Ghasemlou <kamyar@kamy.me>
Co-authored-by: Leonardo Freua <leonardo.batista.freua@gmail.com>