Updated mediawiki/extensions
Project: mediawiki/extensions/Wikibase  21e3af16448a63749b9b493a2bd64d50fb4d71be

Alway normalise month and day for MW timestamp

add test case for day 00 and month precision

Change-Id: Ib07d7dfbd5be2d6d9294d5b3019dd7e72477597e