chore(CI): bump minikube and kubernetes versions #5113

Job	Run time
sample_operators_tests (sample-operators/mysql-schema)	2m 45s
sample_operators_tests (sample-operators/leader-election)	3m 18s
sample_operators_tests (sample-operators/tomcat-operator)	3m 2s
sample_operators_tests (sample-operators/webpage)	2m 50s
	11m 55s

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