[pre-commit.ci] pre-commit autoupdate

[pre-commit-ci]

updates:

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

[codecov]

Codecov Report

Merging #169 (95cf4c6) into main (a3a7a65) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##              main      #169   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            2         2           
  Lines          156       156           
=========================================
  Hits           156       156           

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