Expire stale refs in ExpireSnapshots #8247

Job	Run time
lint-and-unit-test (3.13)	3m 2s
integration-test-adls	7m 26s
integration-test	22m 18s
lint-and-unit-test (3.10)	2m 56s
lint-and-unit-test (3.11)	2m 59s
cibw-dev-env-smoke-test	30s
integration-test-gcs	6m 53s
lint-and-unit-test (3.12)	9m 28s
integration-test-s3	6m 57s
integration-coverage-report	30s
	1h 2m 59s

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