Update favicon wikivoyage.ico.

Removed the 24x24 version and added 48x48 version.

Bug: 58148
Change-Id: Ife3bbb8ebe8fcecc5f284ff01794f8a7170c7ff8
Update favicon wikidata.ico.

Added 48x48 version.

Bug: 58149
Change-Id: I8ef384a6a9801d2cf2d4b2aca4e3d6e58dbc857c