Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  6b1783e69b8733c34e2ee7281258f2b523349990
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(hotfix) fixing SetLabel Selenium tests after refactoring

- after the refactoring of setLabel special page, the selenium tests
need to be adjusted

Change-Id: I6cf2fcc03706a80080fd2f27af8684371b9fc1ce