Add stable-ghc-9.14 #3358

Job	Run time
unit-tests	12s
nix-build	1m 13s
build-extra-hackages	17s
maintainer-scripts	13s
runghc	18s
plan-extra-hackages	15s
cabal	19s
tests-benchmarks	14s
cabal-doExactConfig	16s
shellFor-hoogle	18s
shellFor-single-package	27s
multi-target	38s
shellFor-multiple-package	21s
shellFor-not-depends	25s
check-nix-tools	19s
docs	3m 35s
hix-cabal	14s
hydra-ifdLevel-0-and-1	4m 14s
hix	35s
hydra-ifdLevel-3	22m 54s
closure-size	9s
hydra-without-remote-builders-ghc967	11s
update-docs	8s
check-path-support	14s
check-materialization-concurrency	24s
hydra-ifdLevel-2	10m 54s
haskell-nix-roots-do-not-require-IFDs	24s
hydra-without-remote-builders-ghc9102	10s
	49m 51s

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