build

Update rubocop requirement from ~> 1.56.0 to ~> 1.57.0 #1810

Job	Run time
lint	19s
spec (alpine-latest, 3.0)	41s
spec (macos-latest, 3.0)	42s
spec (alpine-latest, 3.1)	39s
spec (macos-latest, 3.1)	36s
spec (alpine-latest, 3.2)	37s
spec (macos-latest, 3.2)	41s
spec (alpine-latest, 3.3-rc)	45s
spec (macos-latest, 3.3)	48s
spec (macos-latest, jruby)	2m 58s
spec (macos-latest, truffleruby)	3m 3s
spec (macos-latest, truffleruby+graalvm)	11m 43s
spec (ubuntu-latest, 3.0)	19s
spec (ubuntu-latest, 3.1)	20s
spec (ubuntu-latest, 3.2)	22s
spec (ubuntu-latest, 3.3)	36s
spec (ubuntu-latest, jruby)	1m 51s
spec (ubuntu-latest, truffleruby)	1m 35s
spec (ubuntu-latest, truffleruby+graalvm)	6m 59s
spec (windows-latest, 3.0)	1m 57s
spec (windows-latest, 3.1)	1m 40s
spec (windows-latest, 3.2)	2m 32s
spec (windows-latest, jruby)	3m 6s
release	0s
	44m 49s

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