Update git submodules
Update git submodules

* Update scripts/i18n from branch 'master'
  to 9967bec4bd52f3c5d5fd2576216114a3a8884303
  - Localisation updates from https://translatewiki.net.
    
    Change-Id: I5f631f85418ed85dfb52fe23bc9b9de9e5206b05
    
wikimedia/pywikibot-core,PersianWikipedia/pywikibot-core,wikimedia/pywikibot-core