Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  f15ab26d2d135a702616ab177a3730b2f48a3ce9

Roundtrip tests for Qualifiers and References

I had to disable the UnDeserializableValue test for now. Please
ignore it for now. I will try to fix this in the next patch.

Bug: 66839
Change-Id: Ie8113bffd26648f55be6f7d5010befe8be68ee5d