deprecate c8s images, as EOL for c8s is 31th of May 2024 (#432) #223

Job	Run time
build-and-push (20/Dockerfile.c9s, 20, sclorg, c9s, nodejs-20-c9s, QUAY_IMAGE_SCLORG_BUILDER_USER...	51s
build-and-push (20-minimal/Dockerfile.c9s, 20-minimal, sclorg, c9s, nodejs-20-minimal-c9s, QUAY_I...	53s
build-and-push (18/Dockerfile.fedora, 18, fedora, fedora, QUAY_IMAGE_FEDORA_BUILDER_USERNAME, QUA...	1m 28s
build-and-push (18-minimal/Dockerfile.fedora, 18-minimal, fedora, fedora, QUAY_IMAGE_FEDORA_BUILD...	30s
build-and-push (20/Dockerfile.fedora, 20, fedora, fedora, QUAY_IMAGE_FEDORA_BUILDER_USERNAME, QUA...	1m 14s
build-and-push (20-minimal/Dockerfile.fedora, 20-minimal, fedora, fedora, QUAY_IMAGE_FEDORA_BUILD...	45s
	5m 41s

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