[llvm-branch-commits] [llvm] workflows: Add missing checkouts when using validate-release-version (#210471) (PR #210839)

[Tom Stellard via llvm-branch-commits]

tstellar wrote:

> LGTM.
> 
> Any particular reason this was manually cherry picked?

It looks like it was because there was a Mend Renovate update that was not cherry-picked back and that's why it required the merged.  I also noticed that I accidentally rolled back the checkout version on main, so I will need to fix that.  We should probably backport the Mend Renovate patch too.

https://github.com/llvm/llvm-project/pull/210839