chore: migrate sdk-platform-java #20

Job	Run time
filter	2m 48s
downstream-compatibility-spring-generator	11m 47s
downstream-compatibility (java-firestore)	3m 3s
downstream-compatibility (java-pubsub)	2m 26s
downstream-compatibility (java-spanner)	7m 25s
downstream-compatibility (java-bigtable)	5m 59s
downstream-compatibility (java-bigquery)	4m 19s
downstream-compatibility (java-spanner-jdbc)	3m 41s
downstream-compatibility (java-storage)	4m 47s
downstream-compatibility (java-storage-nio)	3m 36s
downstream-compatibility (java-pubsublite)	2m 54s
	52m 45s

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