Pin `ruby/setup-ruby` Action to v1.215.0 #4357

Job	Run time
Go: tracing with custom build steps (ubuntu-latest, stable-v2.15.5)	1m 17s
Go: tracing with custom build steps (ubuntu-latest, default)	53s
Go: tracing with custom build steps (ubuntu-latest, stable-v2.17.6)	1m 27s
Go: tracing with custom build steps (macos-latest, stable-v2.16.6)	2m 50s
Go: tracing with custom build steps (macos-latest, stable-v2.15.5)	2m 25s
Go: tracing with custom build steps (ubuntu-latest, stable-v2.18.4)	1m 11s
Go: tracing with custom build steps (macos-latest, stable-v2.19.4)	2m 26s
Go: tracing with custom build steps (macos-latest, stable-v2.17.6)	2m 18s
Go: tracing with custom build steps (macos-latest, linked)	3m 29s
Go: tracing with custom build steps (macos-latest, nightly-latest)	2m 23s
Go: tracing with custom build steps (ubuntu-latest, stable-v2.16.6)	1m 15s
Go: tracing with custom build steps (ubuntu-latest, linked)	56s
Go: tracing with custom build steps (macos-latest, stable-v2.18.4)	2m 36s
Go: tracing with custom build steps (ubuntu-latest, nightly-latest)	52s
Go: tracing with custom build steps (macos-latest, default)	3m 9s
Go: tracing with custom build steps (ubuntu-latest, stable-v2.19.4)	1m 17s
	30m 44s

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