Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  f793122a1b3095272cbe6fa42c954df2fc5451f8

Use TestSites site in ItemContentTest

when StoreTest does rebuild, we get undefined index 'eswiki'.

ItemContentTest was using 'eswiki' which is not in TestSites,
which may be the issue.

Change-Id: I69330ab20df9df441dadb1b401f933433448dd6a