Bump versions and deps on master branch to 3.11 and regenerate bootstrap files (backport #8844)

[mergify]

This is an automatic backport of pull request #8844 done by Mergify.
Cherry-pick of dfe7393 has failed:

On branch mergify/bp/3.10/pr-8844
Your branch is up to date with 'origin/3.10'.

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Changes to be committed:
	modified:   .github/workflows/validate.yml
	modified:   bootstrap/cabal.project

Unmerged paths:
  (use "git add/rm <file>..." as appropriate to mark resolution)
	both modified:   .github/workflows/bootstrap.yml
	both modified:   Cabal-QuickCheck/Cabal-QuickCheck.cabal
	both modified:   Cabal-described/Cabal-described.cabal
	both modified:   Cabal-syntax/Cabal-syntax.cabal
	both modified:   Cabal-tree-diff/Cabal-tree-diff.cabal
	both modified:   Cabal/Cabal.cabal
	both modified:   Cabal/Makefile
	both modified:   Makefile
	both modified:   bootstrap/cabal-bootstrap-gen.cabal
	both modified:   bootstrap/linux-8.10.7.json
	both modified:   bootstrap/linux-9.0.2.json
	both deleted:    bootstrap/linux-9.2.3.json
	added by us:     bootstrap/linux-9.2.6.json
	added by them:   bootstrap/linux-9.2.7.json
	both modified:   bootstrap/linux-9.4.4.json
	both modified:   cabal-install-solver/cabal-install-solver.cabal
	both modified:   cabal-install/cabal-install.cabal
	both modified:   cabal-install/src/Distribution/Client/Version.hs
	both modified:   cabal-testsuite/cabal-testsuite.cabal
	both modified:   doc/conf.py
	both modified:   solver-benchmarks/solver-benchmarks.cabal

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[Mikolaj]

Actually, I only wanted to backport the bootstrap configuration changes, so I will need to do that by hand. Also, I will wait until @ulysses4ever figures out GHA caches in #8840 and so it gets fixed on master branch before backporting here bits of the boostrap stuff and CI fixes and the whole GHC 9.6.1 overhaul. Closing.

[Mikolaj]

On a second thought, bootstraps are used from master branch, so let's keep them on 3.10 branch as is, unless they start failing CI.