Update README.md #2712

Job	Run time
build-extra-hackages	10s
cabal-doExactConfig	10s
cabal	11s
check-materialization-concurrency	22s
check-path-support	4s
closure-size	3s
docs	23s
haskell-nix-roots-do-not-require-IFDs	9s
hix	50s
hix-cabal	8s
hydra-ifdLevel-0-and-1	2m 32s
hydra-ifdLevel-2	4m 46s
hydra-ifdLevel-3	24m 15s
hydra-without-remote-builders-ghc8107	2m 37s
hydra-without-remote-builders-ghc9101	1m 57s
maintainer-scripts	7s
multi-target	30s
nix-build	27s
nix-tools	37s
plan-extra-hackages	5s
runghc	11s
shellFor-hoogle	8s
shellFor-multiple-package	10s
shellFor-not-depends	15s
shellFor-single-package	14s
tests-benchmarks	7s
unit-tests	5s
update-docs	4s
	41m 37s

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