Update git submodules

* Update CampaignEvents from branch 'master'
  to 5c3d02a820463b9a0707015f569468cc3c3049d6
  - Merge "Special-case the current user's row on EventDetails when searching"
  - Special-case the current user's row on EventDetails when searching
    
    This fixes the bugs reported in T319453#8372310. The current user is now
    special-cased when searching; its visibility is determined in JS based
    on the username filter, and the row is never deleted, only hidden or
    shown.
    
    Also refactor this code a little bit, since I think
    deleteParticipantsList() was very special and it should generally not be
    used except for when searching, so make the method more specific and
    move there some more statements as well.
    
    Also avoid the usernameFilter class property, as it can be passed in
    directly.
    
    Bug: T319453
    Change-Id: I3540c2e87c9924ee895eb563f7ed7798c695431f

Author: jenkins-bot