chore: bump version to 5.2.2-SNAPSHOT (#3085) #6023

Job	Run time
sample_operators_tests (sample-operators/mysql-schema)	3m 23s
sample_operators_tests (sample-operators/leader-election)	3m 44s
sample_operators_tests (sample-operators/webpage)	3m 56s
sample_operators_tests (sample-operators/tomcat-operator)	4m 6s
	15m 9s

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