Relax development `virtualenv` dependency versioning (#6897) #62

Job	Run time
lint-frontend	1m 18s
lint-misc	11s
lint-python-flake8 (3.9)	14s
lint-python-flake8 (3.10)	15s
build-data-server-pip (native, ubuntu-20.04, 1.65.0)	1m 10s
lint-python-yaml-docs	26s
lint-python-flake8 (3.11)	12s
lint-rust (1.65.0, 0.16.1)	33s
build-data-server-pip (native, macos-12, 1.65.0)	3m 4s
build-data-server-pip (universal, ubuntu-20.04, 1.65.0)	12s
build (tf, 3.9)	10m 41s
build (notf, 3.9)	5m 18s
	23m 34s

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