chore(deps): update pre-commit hook executablebooks/mdformat to v0.7.21

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
executablebooks/mdformat	repository	patch	0.7.19 -> 0.7.21

Note: The pre-commit manager in Renovate is not supported by the pre-commit maintainers or community. Please do not report any problems there, instead create a Discussion in the Renovate repository if you have any questions.

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Release Notes

executablebooks/mdformat (executablebooks/mdformat)

v0.7.21

Compare Source

v0.7.20

Compare Source

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Configuration

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🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.46%. Comparing base (ad3abef) to head (87cc7bc).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #439   +/-   ##
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  Coverage   96.46%   96.46%           
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  Files          12       12           
  Lines         991      991           
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  Hits          956      956           
  Misses         35       35