Updated mediawiki/extensions
Project: mediawiki/extensions/WikibaseQueryEngine  e6fc48621959ba01e334de6b5559ca82b179c0cd

Match changes in WikibaseDatabase component [0].

[0] https://gerrit.wikimedia.org/r/#/c/75873/

Change-Id: I6738025e6008c963f976226c89c998564f27f62a