Update metadata for 8.1.8 #283

Job	Run time
lint-unit / cookstyle	31s
lint-unit / markdown-link-check	20s
lint-unit / markdownlint-cli2	3s
lint-unit / rspec	36s
lint-unit / yamllint	7s
lint-unit / check-metadata	0s
integration (almalinux-8, default)	2h 13m 9s
integration (amazonlinux-2, default)	2h 6m 8s
integration (debian-10, default)	31s
integration (centos-7, default)	32s
integration (centos-stream-8, default)	30s
integration (fedora-latest, default)	2h 14m 58s
integration (ubuntu-1804, default)	34s
integration (ubuntu-2004, default)	2h 46m 50s
integration (rockylinux-8, default)	2h 12m 12s
	11h 37m 1s

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