Update git submodules

* Update Wikibase from branch 'master'
  to 55ac6e55d1bb900bf4ef549c95599fac16581b81
  - Merge "REST: Handle invalid field type in JSON Patch"
  - REST: Handle invalid field type in JSON Patch
    
    Respond with a more specific error when the JSON Patch contains a field with an invalid type.
    
    Handled in `JsonDiffPatchValidator` while we wait for the upstream PR to be merged.
    swaggest/json-diff#60
    
    Bug: T320705
    Change-Id: I92290f5791b14e28e5fcd87d28c8b26d160e899f

Author: jenkins-bot