Revert last workflow change.

Package migth be dconf-cli, but this is too much trieal and error.

.github/workflows/build.yml

@@ -22,7 +22,7 @@ jobs:
       run: |
         sudo apt update -y
         sudo apt upgrade -y
-        sudo apt install -y gdb gtk-doc-tools dconf-tools gsettings-desktop-schemas yelp-tools intltool autopoint valgrind aspell-en xvfb \
+        sudo apt install -y gdb gtk-doc-tools gsettings-desktop-schemas yelp-tools intltool autopoint valgrind aspell-en xvfb \
           libglib2.0-dev libgsf-1-dev libgtk-3-dev libclutter-1.0-dev libclutter-gtk-1.0-dev libgirepository1.0-dev gstreamer1.0-tools gstreamer1.0-plugins-base gstreamer1.0-plugins-good gstreamer1.0-alsa libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev libgudev-1.0-dev liborc-dev libasound2-dev check libfluidsynth-dev libxml2-utils libgstreamer1.0-dev libglib2.0-dev libunwind-dev
 
     - name: autogen.sh