version_skew -> release process does not enforce doc updates

[ReSearchITEng]

While the release doc. has been updated part of #675 , this step is not enforced.
As such, helm 3.12.1 is already out, but the version_skew does not hold the k8s compatibility on previous 3.12.0.

(Another - ideal - option would be automating the update of the docs, should anyone know the location of the release scripts.)

[angellk]

Thanks @ReSearchITEng ! Are you volunteering to help automate the docs update? That would definitely be preferable. cc: @mattfarina

[ReSearchITEng]

Hi,
As I am not part of the team doing the builds, that would be hard. I can prepare some simple scripts, but someone with knowledge on the build flow and triggers should incorporate them.
Does this sound helpful?