Support latest for each major version
Description
I scale up and down my runners and install the latest version so now I am currently running v14 runners with v13 Gitlab. No issues at the moment but it's not recommended by the docs. Luckily my company is upgrading to v14 next week but it would be nice to keep the runners up to date within a major version.
Proposal
Support latest major versions for example:
https://gitlab-runner-downloads.s3.amazonaws.com/latest13/rpm/gitlab-runner_amd64.rpm
https://gitlab-runner-downloads.s3.amazonaws.com/latest14/rpm/gitlab-runner_amd64.rpm
Bonus points if you want to also support latest minor versions since the docs mention that.