* stable-3.1:
CommentsIT#postCommentsUnreachableData: Remove unnecessary setApiUser call
ChangeDraftUpdate: Remove unused local variable
Fix deletion of draft comment refs
Upgrade testcontainers to 1.12.4
Fix loading font-roboto-local in the ui
ExternalIdCacheLoader: suppress warning if cache is not persisted.
ChangeEmail: add project to email headers
OutgoingEmail: use consistently va.smtpRcptTo reference
NotificationEmail: use MailHeader for 'Gerrit-Branch' footer name
Update git submodules
Update git submodules
Update git submodules
Fix "TypeError: groups is not iterable" in _disableAgreements
Fix typos: Aggreements -> Agreements
Upgrade gitiles-servlet and blame-cache to 0.3-7
Change-Id: I3640f489c25eebaa024fe8b6992adc5956d71547