Switch CI to use XFCE components instead of MATE

Replaces 'marco' and 'mate-panel' with 'xfwm4' and 'xfce4-panel' in the CI workflow. Updates package installation and test session commands to use XFCE components, aligning the CI environment with XFCE instead of MATE.

Author: ReenigneArcher

.github/workflows/ci.yml

@@ -55,13 +55,14 @@ jobs:
             cmake \
             ${{ matrix.appindicator }} \
             dbus-x11 \
+            gnome-screenshot \
+            imagemagick \
             libglib2.0-dev \
             libnotify-dev \
             ninja-build \
-            marco \
-            mate-panel \
-            imagemagick \
-            gnome-screenshot \
+            xfce4-goodies \
+            xfce4-panel \
+            xfwm4 \
             xvfb
 
       - name: Setup Dependencies macOS
@@ -178,9 +179,9 @@ jobs:
             XVFB_PID=$!
             sleep 2
             dbus-run-session -- bash -c '
-              marco &
+              xfwm4 &
               WM_PID=$!
-              mate-panel &
+              xfce4-panel &
               PANEL_PID=$!
               sleep 8
               ./test_tray --gtest_color=yes --gtest_output=xml:test_results.xml