Update git submodules
Update git submodules

* Update scripts/i18n from branch 'master'
  to af35ffc258254b2c0921d7f8f0d39fa18efe9ab6
  - Localisation updates from https://translatewiki.net.
    
    Change-Id: I41cf819f51924a9bee7a38344abff98cbdfc9af4
    
wikimedia/pywikibot-core,wikimedia/pywikibot-core