Updated mediawiki/extensions
Project: mediawiki/extensions/MultimediaViewer  aa97b45c2870025b1728df6d279746fb69e17c87

CSS compatibility with upcoming OOUI breaking change

Change-Id: Ic7bb6246b20706f8b7e4d7c39d6eb7fd921fde7b
Mingle: https://wikimedia.mingle.thoughtworks.com/projects/multimedia/cards/832