[pre-commit.ci] pre-commit autoupdate

[pre-commit-ci]

updates:

• github.com/pre-commit/pre-commit-hooks: v4.1.0 → v4.2.0
• github.com/asottile/pyupgrade: v2.31.1 → v2.32.1
• https://github.com/python/black → https://github.com/psf/black
• https://gitlab.com/pycqa/flake8 → https://github.com/PyCQA/flake8
• github.com/PyCQA/flake8: 3.9.2 → 4.0.1

[codecov]

Codecov Report

Merging #102 (ae11127) into master (5fb5936) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #102   +/-   ##
=======================================
  Coverage   78.52%   78.52%           
=======================================
  Files           3        3           
  Lines         326      326           
  Branches       61       61           
=======================================
  Hits          256      256           
  Misses         46       46           
  Partials       24       24           

Flag	Coverage Δ
unittests	78.22% <ø> (ø)

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