Update git submodules
Update git submodules

* Update scripts/i18n from branch 'master'
  to c4a7351915f323e0aab88b81e57e71ccd8f47e8c
  - [6.0] Remove pywikibot-featured messages
    
    - featured.py script was deleted. Therefore remove its messages
    
    Bug: T223826
    Change-Id: I05437c38f894331b5da1d6249d68a2a3bdf8fb0b
    
wikimedia/pywikibot-core,wikimedia/pywikibot-core