feat: added email headers for notification cadence email (#35078) #183

Job	Run time
collect-and-verify	4m 33s
lms-1(py=3.11,dj=pinned,mongo=7.0)	13m 41s
lms-2(py=3.11,dj=pinned,mongo=7.0)	13m 38s
lms-3(py=3.11,dj=pinned,mongo=7.0)	18m 59s
lms-4(py=3.11,dj=pinned,mongo=7.0)	24m 16s
lms-5(py=3.11,dj=pinned,mongo=7.0)	12m 5s
lms-6(py=3.11,dj=pinned,mongo=7.0)	19m 27s
openedx-1-with-lms(py=3.11,dj=pinned,mongo=7.0)	16m 9s
openedx-2-with-lms(py=3.11,dj=pinned,mongo=7.0)	18m 45s
openedx-1-with-cms(py=3.11,dj=pinned,mongo=7.0)	10m 35s
openedx-2-with-cms(py=3.11,dj=pinned,mongo=7.0)	7m 29s
cms-1(py=3.11,dj=pinned,mongo=7.0)	5m 22s
cms-2(py=3.11,dj=pinned,mongo=7.0)	18m 56s
common-with-lms(py=3.11,dj=pinned,mongo=7.0)	12m 13s
common-with-cms(py=3.11,dj=pinned,mongo=7.0)	6m 45s
xmodule-with-lms(py=3.11,dj=pinned,mongo=7.0)	8m 23s
xmodule-with-cms(py=3.11,dj=pinned,mongo=7.0)	7m 45s
Unit tests successful	2s
compile-warnings-report	12s
coverage	0s
merge-artifacts	7s
	3h 39m 22s

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