Update nflow-examples #586

Job	Run time
build-and-test (17)	1m 26s
build-and-test (20)	1m 40s
javadoc-spotbugs-codeql	5m 13s
integration-tests (17, h2)	2m 28s
integration-tests (17, mariadb)	3m 3s
integration-tests (17, postgresql)	2m 33s
integration-tests (17, mysql)	3m 13s
integration-tests (17, sqlserver)	3m 56s
integration-tests (17, db2)	5m 24s
integration-tests (17, oracle)	4m 15s
integration-tests (20, h2)	2m 13s
integration-tests (20, mariadb)	2m 35s
integration-tests (20, postgresql)	2m 47s
integration-tests (20, mysql)	3m 47s
integration-tests (20, sqlserver)	4m 8s
integration-tests (20, db2)	4m 21s
integration-tests (20, oracle)	4m 2s
build-and-test-nflow-explorer-ng	4m 53s
	1h 1m 57s

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