Updated mediawiki/extensions/Wikidata
Project: mediawiki/extensions/Wikibase  23322f79bfc17a7da0e30ea864925c35f3382074

add visibility to SerializerFactory constructor

(this class shall be deleted soonish, but until then fix this)

Change-Id: I25ee118eab90c1f98d295f2cba12b1db3005898c