[pre-commit.ci] pre-commit autoupdate

[pre-commit-ci]

updates:

• github.com/psf/black: 21.9b0 → 21.10b0

[codecov]

Codecov Report

Merging #204 (ce8bc83) into main (a69d7c8) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #204   +/-   ##
=======================================
  Coverage   91.05%   91.05%           
=======================================
  Files           6        6           
  Lines         816      816           
  Branches      103      103           
=======================================
  Hits          743      743           
  Misses         61       61           
  Partials       12       12           

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