Update git submodules
Update git submodules

* Update scripts/i18n from branch 'master'
  to 5a7a1e92881576e0689cce323b2bcc9f8954538c
  - Localisation updates from https://translatewiki.net.
    
    Change-Id: Ifd3bac5f9b2fc4da3e36c3d20143131ff95eed8e
    
PersianWikipedia/pywikibot-core,wikimedia/pywikibot-core,wikimedia/pywikibot-core