Update git submodules

* Update Disambiguator from branch 'master'
  to 8147701f1a287b4a4302b42e4d09c6b3510aace6
  - Merge "Use injected Lookup service; remove deprecated method"
  - Use injected Lookup service; remove deprecated method
    
    The only production user of the deprecated
    Hooks::isDisambiguationPage() method is the RelatedArticles extension;
    the 'depends-on' patch here tweaks it to use the DisambiguatorLookup
    service instead.
    
    A similar patch to fix up a 3rd-party extension is at:
    femiwiki/UnifiedExtensionForFemiwiki#139
    
    This continues the slow cleanup moving to injected services from
    globals.
    
    Depends-On: Id2a10f2f1be0e38ddb8ebef5d5babb3daac3ce9a
    Change-Id: I7f74c0c6347e7c5fea10c49aef665558762711d0