added python 3.12 to setup.py #7807

Job	Run time
Path match check	5s
Python postgres unit tests	13m 38s
Python unit tests (3.6)	13m 34s
Python unit tests (3.7)	15m 18s
Python unit tests (2.7)	16m 14s
Python unit tests (3.8)	12m 11s
Python unit tests on Mac OS (3.6)	16m 42s
Python unit tests (3.9)	13m 38s
Python unit tests on Windows Server (3.6)	26m 21s
Python unit tests (3.10)	14m 6s
Python unit tests (3.11)	26m 30s
	2h 48m 17s

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