refactor: remove the use of knownResourceVersions #5692

Job	Run time
sample_operators_tests (sample-operators/tomcat-operator)	7m 3s
sample_operators_tests (sample-operators/leader-election)	3m 53s
sample_operators_tests (sample-operators/webpage)	3m 26s
sample_operators_tests (sample-operators/mysql-schema)	3m 19s
	17m 41s

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