ci: Lint Github Actions workflows with zizmor

[jan-mue]

https://github.com/zizmorcore/zizmor

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 94.34%. Comparing base (ccdf38f) to head (af54d98).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #346   +/-   ##
=======================================
  Coverage   94.34%   94.34%           
=======================================
  Files          21       21           
  Lines        3646     3646           
=======================================
  Hits         3440     3440           
  Misses        206      206           

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