chore: upgrade openedx-forum version to 0.1.6 #33236

Job	Run time
collect-and-verify	3m 18s
lms-1(py=3.11,dj=pinned,mongo=7.0)	8m 26s
lms-2(py=3.11,dj=pinned,mongo=7.0)	11m 5s
lms-3(py=3.11,dj=pinned,mongo=7.0)	13m 46s
lms-4(py=3.11,dj=pinned,mongo=7.0)	19m 22s
lms-5(py=3.11,dj=pinned,mongo=7.0)	9m 59s
lms-6(py=3.11,dj=pinned,mongo=7.0)	14m 36s
openedx-1-with-lms(py=3.11,dj=pinned,mongo=7.0)	11m 27s
openedx-2-with-lms(py=3.11,dj=pinned,mongo=7.0)	13m 29s
openedx-1-with-cms(py=3.11,dj=pinned,mongo=7.0)	7m 50s
openedx-2-with-cms(py=3.11,dj=pinned,mongo=7.0)	5m 54s
cms-1(py=3.11,dj=pinned,mongo=7.0)	3m 18s
cms-2(py=3.11,dj=pinned,mongo=7.0)	11m 56s
common-with-lms(py=3.11,dj=pinned,mongo=7.0)	8m 12s
common-with-cms(py=3.11,dj=pinned,mongo=7.0)	5m 16s
xmodule-with-lms(py=3.11,dj=pinned,mongo=7.0)	8m 40s
xmodule-with-cms(py=3.11,dj=pinned,mongo=7.0)	12m 3s
xmodule-with-cms(py=3.11,dj=pinned,mongo=7.0)	7m 32s
xmodule-with-lms(py=3.11,dj=pinned,mongo=7.0)	7m 53s
Unit tests successful	1s
compile-warnings-report	12s
coverage (3.11)	1m 39s
merge-artifacts	10s
	3h 6m 4s

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