chore(deps): update dependency karma to v6 [security] #31067

Job	Run time
collect-and-verify	3m 58s
lms-1(py=3.11,dj=pinned,mongo=7.0)	9m 42s
lms-2(py=3.11,dj=pinned,mongo=7.0)	11m 54s
lms-3(py=3.11,dj=pinned,mongo=7.0)	14m 43s
lms-4(py=3.11,dj=pinned,mongo=7.0)	20m 36s
lms-5(py=3.11,dj=pinned,mongo=7.0)	12m 22s
lms-6(py=3.11,dj=pinned,mongo=7.0)	15m 53s
openedx-1-with-lms(py=3.11,dj=pinned,mongo=7.0)	11m 25s
openedx-2-with-lms(py=3.11,dj=pinned,mongo=7.0)	15m 32s
openedx-1-with-cms(py=3.11,dj=pinned,mongo=7.0)	8m 33s
openedx-2-with-cms(py=3.11,dj=pinned,mongo=7.0)	6m 48s
cms-1(py=3.11,dj=pinned,mongo=7.0)	5m 32s
cms-2(py=3.11,dj=pinned,mongo=7.0)	12m 54s
common-with-lms(py=3.11,dj=pinned,mongo=7.0)	10m 7s
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 55s
xmodule-with-cms(py=3.11,dj=pinned,mongo=7.0)	8m 57s
coverage (3.11)	1m 40s
compile-warnings-report	8s
Unit tests successful	2s
merge-artifacts	10s
	3h 5m 16s

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