[Feat] Deprecate Python 3.8, add Python 3.12 + update CI/CD #1175

Job	Run time
agilerl-tutorial-test (3.9, AgileRL)	14m 50s
agilerl-tutorial-test (3.10, AgileRL)	16m 8s
agilerl-tutorial-test (3.11, AgileRL)	16m 30s
tutorial-test (3.9, Tianshou)	4m 16s
tutorial-test (3.9, CustomEnvironment)	1m 23s
tutorial-test (3.9, CleanRL)	5m 58s
tutorial-test (3.9, SB3/kaz)	5m 25s
tutorial-test (3.9, SB3/waterworld)	7m 38s
tutorial-test (3.9, SB3/test)	3m 2s
tutorial-test (3.10, Tianshou)	5m 40s
tutorial-test (3.10, CustomEnvironment)	2m 52s
tutorial-test (3.10, CleanRL)	8m 23s
tutorial-test (3.10, SB3/kaz)	6m 49s
tutorial-test (3.10, SB3/waterworld)	9m 9s
tutorial-test (3.10, SB3/test)	4m 11s
tutorial-test (3.11, Tianshou)	5m 58s
tutorial-test (3.11, CustomEnvironment)	2m 48s
tutorial-test (3.11, CleanRL)	8m 9s
tutorial-test (3.11, SB3/kaz)	6m 40s
tutorial-test (3.11, SB3/waterworld)	9m 6s
tutorial-test (3.11, SB3/test)	5m 16s
tutorial-test (3.12, Tianshou)	6m 23s
tutorial-test (3.12, CustomEnvironment)	2m 59s
tutorial-test (3.12, CleanRL)	7m 46s
tutorial-test (3.12, SB3/kaz)	6m 47s
tutorial-test (3.12, SB3/waterworld)	9m 25s
tutorial-test (3.12, SB3/test)	4m 20s
	3h 7m 51s

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