Use PB type for actions space and for ram states type, acquire new ca… #196

Job	Run time
Generate build matrix	8s
build-and-push-arena-images (images/base, base-on3.10-bullseye, on=3.10-bullseye)	37s
build-and-push-arena-images (images/base, base-on3.9-bullseye, on=3.9-bullseye)	38s
build-and-push-arena-images (images/base, base-on3.7-bullseye, on=3.7-bullseye)	34s
build-and-push-arena-images (images/ray_rllib, ray-rllib-on3.10-bullseye, on=3.10-bullseye)	38s
build-and-push-arena-images (images/ray_rllib, ray-rllib-on3.9-bullseye, on=3.9-bullseye)	36s
build-and-push-arena-images (images/stable-baselines, stable-baselines-on3.7-bullseye, on=3.7-bul...	37s
build-and-push-arena-images (images/stable-baselines3, stable-baselines3-on3.10-bullseye, on=3.10...	31s
build-and-push-arena-images (images/stable-baselines3, stable-baselines3-on3.9-bullseye, on=3.9-b...	41s
	5m 0s

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