Updated mediawiki/extensions
Project: mediawiki/extensions/EventLogging  daf18510f27ed5e122d39e45df0267639a5e9131

Bump EventCapsule schema ref to 6862080

Thus introducing 'userAgent' and removing the workaround.

Change-Id: Ie3e7fd6933a8b06752108833669f17dda64fdd5c