Update git submodules
Update git submodules

* Update scripts/i18n from branch 'master'
  to 2b84e4d1e51edf013ecf87ec1c2b12c078992c92
  - Localisation updates from https://translatewiki.net.
    
    Change-Id: Id6cb0e3bcae496a67d840ad81be9bcffefe7f660
    
wikimedia/pywikibot-core,wikimedia/pywikibot-core