9.4.4 release

[Matthew Pickering]

Hi all,

We are going to release the latest release in the 9.4.* series before Christmas.

The release fixes a number of small bugs which have surfaced to do with 9.4.

For the current full list of backports see:

https://gitlab.haskell.org/ghc/ghc/-/merge_requests/9523

I am preparing the release branch and then Ben will perform the final
steps necessary for the release.

Cheers,

Matt