Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  7609139a6f9f1ad773680f753b6075e59bd095ea

Fix invalid array_merge in MergeItems api module

This module inherits directly from ApiBase where
getParamDescription returns false, thus calling it then
array_merge results in a php warning and incomplete
description on the api help page.

Bug: 71469
Change-Id: Ib508355a3720c1c54b95c34aeb2446ac48909b32