ci: pre-commit autoupdate

[pre-commit-ci[bot]]

updates:

• github.com/adamchainz/django-upgrade: 1.12.0 → 1.13.0

[codecov[bot]]

Codecov Report

Merging #152 (9567b46) into master (40a0476) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #152   +/-   ##
=======================================
  Coverage   96.71%   96.71%           
=======================================
  Files           6        6           
  Lines         213      213           
  Branches       34       34           
=======================================
  Hits          206      206           
  Misses          4        4           
  Partials        3        3           

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