deps: update googleapis/java-cloud-bom digest to 514a644 #10016

Job	Run time
build(21) except self-service clients	13m 26s
build (11)	15m 19s
build(8) except for gapic-generator-java	4m 14s
build(8) for gapic-generator-java	11m 42s
compatibility	1m 25s
dependency_analyzer_unit_test	12s
build (17)	15m 2s
gapic-generator-java-bom	1m 50s
lint	27s
showcase-clirr	3m 10s
showcase (11)	4m 12s
unmanaged_dependency_check	4m 36s
showcase (17)	4m 13s
showcase (21)	4m 8s
showcase (23)	4m 18s
	1h 28m 14s

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