Update git submodules

* Update UniversalLanguageSelector from branch 'master'
  to bf55f0287e06f0e8a076a30195c5ce3b77155509
  - Update jquery.ime and jquery.uls and update search index
    
    jquery.ime:
    * Add Jju tilde
    * Rename Tigre (tig) autonym
    * Enable Cameroon keyboard for Ngiemboon (nnh)
    * Update Javanese (Latin) keyboard
    
    Updating to
    wikimedia/jquery.ime@76a0db2
    
    jquery.uls:
    * Localization updates
    * Update language-data to
      wikimedia/jquery.uls#489
    
    Bug: T371985
    Bug: T373741
    Bug: T373561
    Bug: T373928
    Bug: T373931
    Change-Id: Ibb61084a93ad54df1531dde96ff29ab8fbbd468f