Build: Add .venv/ to .gitignore (#3626) #9201

Job	Run time
integration-test-gcs	1m 7s
cibw-dev-env-smoke-test	32s
integration-test-adls	1m 24s
lint-and-unit-test (3.14)	2m 39s
lint-and-unit-test (3.13)	3m 20s
integration-test-s3	1m 15s
integration-test	11m 8s
lint-and-unit-test (3.10)	3m 59s
lint-and-unit-test (3.12)	3m 14s
lint-and-unit-test (3.11)	3m 46s
integration-coverage-report	38s
	33m 2s

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