Ubuntu test fixes

Author: mrvisscher

.github/workflows/testing.yaml

@@ -8,7 +8,7 @@ on:
       - major
 
 jobs:
-  build:
+  tests:
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
@@ -31,7 +31,7 @@ jobs:
         run: |
           sudo apt install -y libxkbcommon-x11-0 libxcb-icccm4 libxcb-image0 \
             libxcb-keysyms1 libxcb-randr0 libxcb-render-util0 libxcb-xinerama0 \
-            libxcb-xfixes0 xvfb x11-utils glibc-tools;
+            libxcb-xfixes0 xvfb x11-utils glibc-tools libgl1;
           /sbin/start-stop-daemon --start --quiet --pidfile /tmp/custom_xvfb_99.pid \
           --make-pidfile --background --exec /usr/bin/Xvfb -- :99 -screen 0 \
           1920x1200x24 -ac +extension GLX +render -noreset;