Bump cabal-bootstrap-gen to GHC 9.4.4 ecosystem (backport #8720)

[mergify]

@Mikolaj says: am I right we should backport this? Ideally we'd let people bootstrap with 9.6, in case it supports new platforms, but realistically previous stable GHC is already something and worth the risk of breakage in semi-code-freeze, isn't it?

This is an automatic backport of pull request #8720 done by Mergify.

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[nmeum]

@Mergifyio rebase

[mergify]

rebase

❌ Command disallowed due to command restrictions in the Mergify configuration.

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[Mikolaj]

@Mergifyio rebase

[mergify]

⚠️ This pull request got rebased on behalf of a random user of the organization.
This behavior will change on the 1st February 2023, Mergify will pick the author of the pull request instead.

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[mergify]

rebase

✅ Branch has been successfully rebased

[Mikolaj]

Nobody reviewed positively nor negatively, so let me review myself. LGTM.

[Mikolaj]

@nmeum: it rejected your rebase possibly because it's not your commit and you are not a repo admin. I'm not sure. Thank you for reminding me of this one --- I waited for a backport review, but none came.