Update git submodules

* Update helpcontent2 from branch 'master'
  - Mute l10n of standard attributes
    
    Change-Id: Iccd6d1b1ee11d702ccdc61226011b80973370287
    Reviewed-on: https://gerrit.libreoffice.org/79794
    Tested-by: Jenkins
    Reviewed-by: Olivier Hallot <olivier.hallot@libreoffice.org>
    
diff --git a/helpcontent2 b/helpcontent2
index 4967952..5b3e68e 160000
--- a/helpcontent2
+++ b/helpcontent2
@@ -1 +1 @@
Subproject commit 4967952d329d7c96e76d3b5dfe40003d3a8fe1a5
Subproject commit 5b3e68e1ce0a3bc5893bb487c6d85ef4d3f9bfed