Update actions/stale action to v9 (#19) #118

Job	Run time
lint-unit / markdownlint-cli2	2s
lint-unit / markdown-link-check	20s
lint-unit / check-metadata	0s
lint-unit / cookstyle	32s
lint-unit / rspec	34s
lint-unit / yamllint	9s
integration (almalinux-8, default)	2m 30s
integration (almalinux-9, default)	2m 13s
integration (amazonlinux-2023, default)	1m 54s
integration (centos-7, default)	3m 58s
integration (centos-stream-8, default)	2m 38s
integration (centos-stream-9, default)	2m 36s
integration (debian-10, default)	2m 56s
integration (debian-11, default)	3m 2s
integration (debian-12, default)	2m 42s
integration (opensuse-leap-15, default)	5m 14s
integration (ubuntu-1804, default)	3m 43s
integration (ubuntu-2004, default)	2m 58s
integration (ubuntu-2204, default)	2m 54s
	40m 55s

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