Updated mediawiki/extensions
Project: mediawiki/extensions/WikibaseDataModel  068cc898528ed129901a6ab2a5ce804169757049

Stop depending on global state for toString.

__toString should be implemented in a way that doesn't rely on
global state or resources. This is now fixed for EntityId.

Change-Id: I319b5fb7952335864f4a29bb6170fd73b20dea52