Add gymnasium support to SAC #1432

Job	Run time
test-atari-envs (3.8, 1.3.1, ubuntu-22.04)	7m 48s
test-atari-envs (3.8, 1.3.1, macos-latest)	10m 50s
test-atari-envs (3.8, 1.3.1, windows-latest)	5m 25s
test-atari-multigpu-envs (3.8, 1.3.1, ubuntu-22.04)	3m 28s
test-envpool-envs (3.8, 1.3.1, ubuntu-22.04)	4m 56s
test-core-envs (3.8, 1.3.1, ubuntu-22.04)	4m 45s
test-mujoco_py-envs (3.8, 1.3.1, ubuntu-22.04)	5m 50s
test-core-envs (3.8, 1.3.1, macos-latest)	8m 24s
test-pettingzoo-envs (3.8, 1.3.1, ubuntu-22.04)	3m 19s
test-mujoco-envs (3.8, 1.3.1, ubuntu-22.04)	3m 36s
test-procgen-envs (3.8, 1.3.1, ubuntu-22.04)	3m 10s
test-core-envs (3.8, 1.3.1, windows-latest)	6m 56s
test-procgen-envs (3.8, 1.3.1, macos-latest)	4m 22s
test-procgen-envs (3.8, 1.3.1, windows-latest)	6m 37s
	1h 19m 26s

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