Bump version to 2.0.1 #9422

Job	Run time
base-tests (./cli)	2m 41s
benchmark (e10_drive)	3m 14s
base-tests (./envision)	3m 18s
examples-rl (e10_drive)	5m 14s
benchmark (e11_platoon)	2m 15s
base-tests (./smarts/core --nb-exec-timeout 65536 --ignore=./smarts/core/tests/test_notebook.py)	19m 33s
examples-rl (e11_platoon)	2m 59s
base-tests (./smarts/env --ignore=./smarts/env/tests/test_rllib_hiway_env.py)	4m 30s
base-tests (./smarts/env/tests/test_rllib_hiway_env.py)	3m 5s
base-tests (./smarts/sstudio)	2m 58s
base-tests (./smarts/ray)	3m 7s
base-tests (./examples/tests/test_examples.py)	4m 47s
	57m 41s

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