Enforce signed commits

[betarelease]

@sbtaylor15 @prince-chrismc

[AbhijithGanesh]

@betarelease I think you've accidentally assigned Chris. I can add in an automation/CI for this, that will further enforce signed commits

[prince-chrismc]

It's a checkbox for admins 😉

https://docs.github.com/en/authentication/managing-commit-signature-verification/about-commit-signature-verification#statuses-with-vigilant-mode-enabled

Repository administrators can enforce required commit signing on a branch to block all commits that are not signed and verified. For more information, see "About protected branches."