Build: Bump gcsfs from 2026.5.0 to 2026.6.0 #9047

Job	Run time
cibw-dev-env-smoke-test	39s
integration-test-gcs	54m 45s
integration-test	10m 54s
lint-and-unit-test (3.10)	3m 14s
integration-test-s3	1m 25s
lint-and-unit-test (3.13)	3m 35s
lint-and-unit-test (3.14)	5m 9s
lint-and-unit-test (3.12)	3m 34s
lint-and-unit-test (3.11)	3m 13s
integration-test-adls	1m 22s
integration-coverage-report	30s
	1h 28m 20s

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