Bump ruby/setup-ruby from 1.156.0 to 1.157.0 #494

Job	Run time
ruby-versions / Generate Ruby versions	3s
test (3.0, ubuntu-latest)	32s
test (3.0, macos-latest)	41s
test (3.0, windows-latest)	2m 1s
test (3.1, ubuntu-latest)	25s
test (3.1, macos-latest)	32s
test (3.1, windows-latest)	2m 16s
test (3.2, ubuntu-latest)	30s
test (3.2, macos-latest)	1m 4s
test (3.2, windows-latest)	3m 33s
test (head, ubuntu-latest)	34s
test (head, macos-latest)	38s
test (head, windows-latest)	2m 10s
test (jruby, ubuntu-latest)	2m 5s
test (jruby, macos-latest)	2m 58s
test (jruby-head, ubuntu-latest)	1m 44s
test (jruby-head, macos-latest)	1m 38s
test (truffleruby, ubuntu-latest)	5m 25s
test (truffleruby, macos-latest)	6m 40s
test (truffleruby-head, ubuntu-latest)	6m 54s
test (truffleruby-head, macos-latest)	8m 6s
	50m 29s

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