Automate check for commitizen document broken links

[bearomorphism]

Maybe we should automate check for broken links (and run with a cron) using https://github.com/lycheeverse/lychee

Originally posted by @woile in #1684 (comment)

[bearomorphism]

https://github.com/lycheeverse/lychee-action

[bearomorphism]

Reopen since the "Broken link report" job is failing

https://github.com/commitizen-tools/commitizen/actions/runs/20509186006/job/58928073580