chore(main): release 2.56.2 #6395

Job	Run time
downstream-compatibility-spring-generator	9m 34s
downstream-compatibility (google-cloud-java)	12m 13s
downstream-compatibility (java-datastore)	3m 7s
downstream-compatibility (java-logging-logback)	1m 25s
downstream-compatibility (java-bigtable)	4m 0s
downstream-compatibility (java-spanner)	4m 58s
downstream-compatibility (java-pubsub)	1m 52s
downstream-compatibility (java-bigquery)	3m 55s
downstream-compatibility (java-bigquerystorage)	9m 23s
downstream-compatibility (java-logging)	2m 5s
downstream-compatibility (java-pubsublite)	2m 28s
downstream-compatibility (java-spanner-jdbc)	2m 15s
downstream-compatibility (java-storage)	4m 21s
downstream-compatibility (java-firestore)	2m 36s
downstream-compatibility (java-storage-nio)	2m 40s
	1h 6m 52s

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