chore: close repo after use #9541

Job	Run time
build(8) except for gapic-generator-java	4m 31s
build (11)	14m 23s
build (17)	14m 20s
build(21) except self-service clients	13m 13s
build(8) for gapic-generator-java	11m 3s
compatibility	1m 32s
dependency_analyzer_unit_test	41s
gapic-generator-java-bom	1m 51s
lint	30s
showcase (11)	4m 7s
showcase (17)	4m 43s
showcase-clirr	3m 4s
showcase (21)	4m 15s
showcase-native	8m 47s
unmanaged_dependency_check	5m 33s
	1h 32m 33s

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