docs: Update compatibility.mdx for OpenShift (1.18.x) (#21601) #17371

Job	Run time
Setup	7s
get-go-version / Determine Go toolchain version	6s
check-go-mod / check-go-mod	55s
build-amd64	3m 2s
build-arm	2m 45s
build-386	1m 51s
build-s390x	0s
build-distros-success	1s
	8m 47s

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