Update git submodules

* Update Wikibase from branch 'master'
  to 30141108208a99f0c739ff522f3aac07410ed17c
  - Merge "Bump api-testing from 1.5.0 to 1.5.1"
  - Bump api-testing from 1.5.0 to 1.5.1
    
    Bumps api-testing from 1.5.0 to 1.5.1.
    
    ---
    updated-dependencies:
    - dependency-name: api-testing
      dependency-type: direct:development
      update-type: version-update:semver-patch
    ...
    
    Signed-off-by: dependabot[bot] <[email protected]>
    Pull Request: wikimedia/mediawiki-extensions-Wikibase#293
    Change-Id: If1923583f4b575384524742c4b4c9b439de31c5f

Author: jenkins-bot