Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  1aad39e56de87dbbf7cea744edb0fb213f7a930a

(bug 49264) Handle UnDeserializableValue gracefully.

NOTE: this requires Id27f1902 to be merged into the
WikibaseDataModel module.(merged)

Change-Id: Ic9a6a9f16090861cb95be99f7ab694b18cd91b98