Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  4c50270e0274d12ecf3bb82e2c40fe8ec14b54bf

Use the new Statement constructor everywhere

Step to tackle DataModel 2.0

See also GitHub: https://github.com/wmde/WikibaseDataModel/pull/234

Change-Id: I97d38b057427af37e076895b12f14e61920c1c65