GHC release status

This is going to get much easer with the advent of the new LTS GHC versions. Afaiu 9.14 will be the first.

Instead of guessing which major version has the highest backport frequency, the LTS tag will answer this once and for all.

GHCup will likely just synchronize the recommended tag with those LTS versions (after the first minor versions have passed).

Also see Please revise the release policy (#26067) · Issues · Glasgow Haskell Compiler / GHC · GitLab