Updated mediawiki/extensions
Project: mediawiki/extensions/SemanticMediaWiki  68ad7783230fda7105a3e5f41968c7ca111f125c

\SMW\Test\MockObjectBuilder, closeConnection is abstract in 1.21/1.22

Change-Id: Ib8d1b8301d40192493bbcef42f6626f9e12e9a65