drop py38 add py312 #94

Job	Run time
collect-and-verify	4m 27s
lms-1(py=3.11,dj=pinned,mongo=7.0)	9m 52s
lms-2(py=3.11,dj=pinned,mongo=7.0)	12m 3s
lms-3(py=3.11,dj=pinned,mongo=7.0)	15m 8s
lms-4(py=3.11,dj=pinned,mongo=7.0)	19m 31s
lms-5(py=3.11,dj=pinned,mongo=7.0)	11m 3s
lms-6(py=3.11,dj=pinned,mongo=7.0)	16m 9s
openedx-1-with-lms(py=3.11,dj=pinned,mongo=7.0)	11m 20s
openedx-2-with-lms(py=3.11,dj=pinned,mongo=7.0)	14m 34s
openedx-1-with-cms(py=3.11,dj=pinned,mongo=7.0)	8m 45s
openedx-2-with-cms(py=3.11,dj=pinned,mongo=7.0)	6m 32s
cms-1(py=3.11,dj=pinned,mongo=7.0)	4m 45s
cms-2(py=3.11,dj=pinned,mongo=7.0)	12m 42s
common-with-lms(py=3.11,dj=pinned,mongo=7.0)	9m 55s
common-with-cms(py=3.11,dj=pinned,mongo=7.0)	5m 31s
xmodule-with-lms(py=3.11,dj=pinned,mongo=7.0)	8m 49s
xmodule-with-cms(py=3.11,dj=pinned,mongo=7.0)	8m 45s
xmodule-with-cms(py=3.11,dj=pinned,mongo=7.0)	8m 52s
xmodule-with-lms(py=3.11,dj=pinned,mongo=7.0)	9m 0s
Unit tests successful	2s
coverage	0s
compile-warnings-report	8s
merge-artifacts	6s
	3h 17m 59s

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