fix: spotless plugin activation issue #4954

Job	Run time
sample_operators_tests (sample-operators/mysql-schema)	2m 26s
sample_operators_tests (sample-operators/tomcat-operator)	2m 39s
sample_operators_tests (sample-operators/webpage)	2m 45s
sample_operators_tests (sample-operators/leader-election)	3m 17s
	11m 7s

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