Support for python 3.12 datetime #206

Job	Run time
sanity / django_not_installed	1m 24s
test latest / Django@-main / Python@3.8	1m 44s
sanity / ruff	1m 16s
test latest / Django@4.0 / Python@3.8	1m 48s
sanity / pylint	1m 35s
test latest / Django@-main / Python@3.9	1m 45s
sanity / readme	1m 27s
test latest / Django@4.0 / Python@3.9	1m 42s
test latest / Django@-main / Python@3.10	1m 44s
test latest / Django@4.0 / Python@3.10	1m 37s
test old stuff / Django@3.2 / Python@3.7	22m 23s
test latest / Django@-main / Python@3.11	1m 33s
test old stuff / Django@3.1 / Python@3.7	22m 41s
test latest / Django@4.0 / Python@3.11	1m 31s
test old stuff / Django@3.0 / Python@3.7	22m 47s
test latest / Django@-main / Python@3.12	1m 50s
test old stuff / Django@2.2 / Python@3.7	22m 44s
test latest / Django@4.0 / Python@3.12	1m 42s
test old stuff / Django@3.2 / Python@3.8	4m 6s
test old stuff / Django@3.1 / Python@3.8	1m 39s
test old stuff / Django@3.0 / Python@3.8	1m 38s
build_and_package_sanity (3.11)	1m 32s
test old stuff / Django@2.2 / Python@3.8	1m 42s
test old stuff / Django@3.2 / Python@3.9	1m 41s
test old stuff / Django@3.1 / Python@3.9	1m 48s
test old stuff / Django@3.0 / Python@3.9	1m 40s
test old stuff / Django@2.2 / Python@3.9	1m 40s
	2h 10m 39s

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