[pre-commit.ci] pre-commit autoupdate

[pre-commit-ci]

updates:

• github.com/pre-commit/mirrors-mypy: v0.942 → v0.950

[codecov]

Codecov Report

Merging #388 (fc919b1) into main (e2082d6) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #388   +/-   ##
=======================================
  Coverage   94.69%   94.69%           
=======================================
  Files          27       27           
  Lines        2809     2809           
=======================================
  Hits         2660     2660           
  Misses        149      149           

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