Revert to v2.5.1

This compare: https://gitlab.com/gitlab-org/security-products/sast-rules/-/compare/v2.5.1...revert-2.5.1?from_project_id=27038823&straight=false

shows that it is keeping the list of commits (the history), but not making any change to the tree of v2.5.1

Please see this comment for more details on why this was necessary.