Revert "Pin python version to 3.10 because of 3.12 github actions inc… #264

Job	Run time
Generate build matrix	7s
build-and-push-arena-images (images/base, base-on3.10-bullseye, on=3.10-bullseye)	1m 49s
build-and-push-arena-images (images/base, base-on3.9-bullseye, on=3.9-bullseye)	1m 46s
build-and-push-arena-images (images/base, base-on3.8-bullseye, on=3.8-bullseye)	1m 45s
build-and-push-arena-images (images/base, base-on3.7-bullseye, on=3.7-bullseye)	2m 13s
build-and-push-arena-images (images/ray_rllib, ray-rllib-on3.10-bullseye, on=3.10-bullseye)	49m 16s
build-and-push-arena-images (images/ray_rllib, ray-rllib-on3.9-bullseye, on=3.9-bullseye)	49m 9s
build-and-push-arena-images (images/ray_rllib, ray-rllib-on3.8-bullseye, on=3.8-bullseye)	1h 10m 35s
build-and-push-arena-images (images/sheeprl, sheeprl-on3.10-bullseye, on=3.10-bullseye)	27m 25s
build-and-push-arena-images (images/sheeprl, sheeprl-on3.9-bullseye, on=3.9-bullseye)	26m 32s
build-and-push-arena-images (images/sheeprl, sheeprl-on3.8-bullseye, on=3.8-bullseye)	30m 23s
build-and-push-arena-images (images/stable-baselines, stable-baselines-on3.7-bullseye, on=3.7-bul...	8m 3s
build-and-push-arena-images (images/stable-baselines3, stable-baselines3-on3.10-bullseye, on=3.10...	31m 45s
build-and-push-arena-images (images/stable-baselines3, stable-baselines3-on3.9-bullseye, on=3.9-b...	32m 34s
build-and-push-arena-images (images/stable-baselines3, stable-baselines3-on3.8-bullseye, on=3.8-b...	27m 14s
	6h 0m 36s

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