Update git submodules

* Update helpcontent2 from branch 'master'
  - tdf#122548 copy bascode and pycode to clipboard
    
    This will allow easy testing of coding examples.
    
    Change-Id: I30fc53642b1579744591f2de0c84a615d1755352
    Reviewed-on: https://gerrit.libreoffice.org/71385
    Tested-by: Jenkins
Reviewed-by: Olivier Hallot <olivier.hallot@libreoffice.org>
    

helpcontent2 @ 3c494b6e

-Subproject commit c1053ceff3ede558b858a30270324430c940311c
+Subproject commit 3c494b6e6db198099f4641aaef3f608842d53faa