Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  37750acd291cb8732e42a3464ad80c9109531f4c

Fix client and lib tests

* lib UpdateRepoOnMoveJobTest::testGetSummary will only work on repo
* client UpdateRepoOnMoveTest should use a mock SiteLinkLookup

Change-Id: Ic52d5bfc13ee25aeb64b4845ddb856e438bc0564