Fixup CI versions. Drop all older RHEL releases which are broken. #246

Job	Run time
Lint	10s
Molecule (rockylinux9, converge.yml)	4m 49s
Molecule (ubuntu2204, converge.yml)	2m 49s
Molecule (debian11, converge.yml)	2m 56s
Molecule (rockylinux9, solr-7.yml)	2m 43s
Molecule (debian11, solr-7.yml)	4m 23s
Molecule (ubuntu2004, solr-6.yml)	3m 1s
Molecule (ubuntu2004, solr-5.yml)	3m 9s
Molecule (ubuntu2004, solr-4.yml)	2m 26s
Molecule (ubuntu2004, solr-3.yml)	2m 22s
	28m 48s

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