Use `hls-2.10` (#2344) #3040

Job	Run time
cabal-doExactConfig	10s
build-extra-hackages	7s
cabal	9s
check-materialization-concurrency	20s
check-path-support	9s
closure-size	2s
docs	36s
haskell-nix-roots-do-not-require-IFDs	14s
hix	35s
hix-cabal	7s
hydra-ifdLevel-0-and-1	2m 56s
hydra-ifdLevel-2	3m 12s
hydra-ifdLevel-3	30m 15s
hydra-without-remote-builders-ghc9101	2m 22s
hydra-without-remote-builders-ghc967	2m 33s
maintainer-scripts	10s
multi-target	35s
nix-build	54s
nix-tools	12s
plan-extra-hackages	9s
runghc	12s
shellFor-hoogle	15s
shellFor-multiple-package	14s
shellFor-not-depends	17s
shellFor-single-package	25s
tests-benchmarks	7s
unit-tests	5s
update-docs	4s
	47m 26s

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