Add ghc 9.8.3, update nixpkgs and ghc HEAD (#2264) #2746

Job	Run time
cabal	2m 8s
multi-target	9m 40s
cabal-doExactConfig	2m 11s
nix-build	9m 24s
shellFor-single-package	7m 1s
runghc	8s
tests-benchmarks	17s
unit-tests	7s
build-extra-hackages	9s
docs	1m 45s
hix	7m 56s
maintainer-scripts	10s
hydra-ifdLevel-0-and-1	3m 24s
plan-extra-hackages	6s
shellFor-hoogle	9s
shellFor-multiple-package	24s
shellFor-not-depends	23s
check-materialization-concurrency	21s
check-path-support	11s
hydra-ifdLevel-2	6m 25s
closure-size	8s
hydra-ifdLevel-3	30m 14s
hydra-without-remote-builders-ghc8107	2m 39s
update-docs	5s
haskell-nix-roots-do-not-require-IFDs	9s
hix-cabal	1m 29s
hydra-without-remote-builders-ghc9101	2m 24s
nix-tools	12s
	1h 29m 39s

Provide feedback