Update git submodules

* Update helpcontent2 from branch 'master'
  - Mute l10n for python uncomented code lines
    
    Change-Id: Ia5bc3debed55813c9481acf360b96731266e7000
    Reviewed-on: https://gerrit.libreoffice.org/67822
    Tested-by: Jenkins
Reviewed-by: Olivier Hallot <olivier.hallot@libreoffice.org>
    

helpcontent2 @ 96e5f8c5

-Subproject commit 5f787a1f2d96dcc67dde76a688867a593bb815df
+Subproject commit 96e5f8c5059270f9d17b0151a90b6893eb3f433d