Build: Bump fsspec from 2026.2.0 to 2026.4.0 (#3490) #8870

Job	Run time
integration-test-s3	1m 31s
integration-test-gcs	1m 33s
cibw-dev-env-smoke-test	41s
integration-test	11m 0s
lint-and-unit-test (3.10)	3m 21s
lint-and-unit-test (3.12)	3m 34s
lint-and-unit-test (3.14)	6m 35s
lint-and-unit-test (3.11)	3m 10s
lint-and-unit-test (3.13)	3m 14s
integration-test-adls	1m 31s
integration-coverage-report	28s
	36m 38s

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