Update actions/stale action to v9 #213

Job	Run time
lint-unit / check-metadata	6s
lint-unit / markdown-link-check	20s
lint-unit / cookstyle	33s
lint-unit / markdownlint-cli2	5s
lint-unit / rspec	35s
lint-unit / yamllint	10s
integration-macos	1m 34s
integration (almalinux-8, default)	4m 42s
integration (centos-7, default)	4m 10s
integration (centos-stream-8, default)	5m 24s
integration (debian-10, default)	4m 37s
integration (debian-11, default)	5m 1s
integration (rockylinux-8, default)	4m 49s
integration (ubuntu-1804, default)	4m 52s
integration (ubuntu-2004, default)	5m 16s
integration (ubuntu-2204, default)	6m 16s
Final Results	1s
	48m 31s

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