Updated mediawiki/extensions
Project: mediawiki/extensions/DataValues  4ced37b0c51ced1d11a4614c96d7584e867da126
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Makes eachchange tests fully independent from Wikibase

Resolves last remaining dependencies after code got moved into DataTypes extension.

Change-Id: I8e81fd9b6e69c65dba015a452f8ff067b946fdc9