Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  7356ba9e93bc606faf574a2ec146a56b893df5e4

Moved DBConnectionProvider to Database component

This is blocking independence of other components and is thus high prio.
Namespace should be fixed in a follow up refactor.

Change-Id: I43d3fabce4b25fb89b683c30edc4a873fcebdce4