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.

---

Release Notes

executablebooks/mdformat (executablebooks/mdformat)

v0.7.21

Compare Source

v0.7.20

Compare Source

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 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.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.68%. Comparing base (4556102) to head (836dc7c).
Report is 1 commits behind head on main.

✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2418      +/-   ##
==========================================
- Coverage   79.74%   79.68%   -0.07%     
==========================================
  Files          56       56              
  Lines        4874     4874              
  Branches      477      477              
==========================================
- Hits         3887     3884       -3     
- Misses        829      831       +2     
- Partials      158      159       +1