Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  d6633145ab3247e837973b4576d86754f5431ede

Add more DataValues to DataModelSerializationRoundtripTest

At least the most basic DataValue implementations should be tested.
Somebody said all DataValue classes have their own serialization
tests so it is not necesarry to test them all again.

Bug: 66839
Change-Id: I213669827111ec3e743d30a98f152f5273cfd398