feat: update XBlock to 5.1.0 #27925

Job	Run time
collect-and-verify	4m 36s
lms-1(py=3.11,dj=pinned,mongo=7.0)	9m 44s
lms-2(py=3.11,dj=pinned,mongo=7.0)	11m 48s
lms-3(py=3.11,dj=pinned,mongo=7.0)	15m 10s
lms-4(py=3.11,dj=pinned,mongo=7.0)	20m 13s
lms-5(py=3.11,dj=pinned,mongo=7.0)	11m 41s
lms-6(py=3.11,dj=pinned,mongo=7.0)	15m 31s
openedx-1-with-lms(py=3.11,dj=pinned,mongo=7.0)	11m 9s
openedx-2-with-lms(py=3.11,dj=pinned,mongo=7.0)	14m 14s
openedx-1-with-cms(py=3.11,dj=pinned,mongo=7.0)	7m 58s
openedx-2-with-cms(py=3.11,dj=pinned,mongo=7.0)	6m 48s
cms-1(py=3.11,dj=pinned,mongo=7.0)	4m 52s
cms-2(py=3.11,dj=pinned,mongo=7.0)	12m 32s
common-with-lms(py=3.11,dj=pinned,mongo=7.0)	9m 56s
common-with-cms(py=3.11,dj=pinned,mongo=7.0)	5m 25s
xmodule-with-lms(py=3.11,dj=pinned,mongo=7.0)	8m 40s
xmodule-with-cms(py=3.11,dj=pinned,mongo=7.0)	8m 55s
compile-warnings-report	13s
Unit tests successful	4s
coverage (3.11)	1m 40s
merge-artifacts	6s
	3h 1m 15s

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