Update git submodules
Update git submodules

* Update scripts/i18n from branch 'master'
  to cf961d5d7db37682d927d57875102b883c05d2bf
  - Localisation updates from https://translatewiki.net.
    
    Change-Id: I830730f92d92838145a655e38c8b20c288acbd26
    
wikimedia/pywikibot-core,wikimedia/pywikibot-core