Pin `ruby/setup-ruby` Action to v1.215.0 #9215

Job	Run time
analyze-actions	58s
check-codeql-versions	44s
analyze-javascript (ubuntu-20.04, linked)	4m 40s
analyze-javascript (ubuntu-20.04)	4m 31s
analyze-javascript (ubuntu-22.04)	4m 16s
analyze-javascript (ubuntu-22.04, linked)	4m 14s
analyze-javascript (macos-13, linked)	11m 10s
analyze-javascript (windows-2019, linked)	9m 50s
analyze-javascript (windows-2022)	9m 25s
analyze-javascript (macos-14, linked)	4m 59s
analyze-javascript (macos-14)	6m 47s
analyze-javascript (macos-13)	10m 25s
analyze-javascript (windows-2022, linked)	7m 25s
analyze-javascript (windows-2019)	9m 20s
	1h 28m 44s

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