Add libxrandr to Github workflow to build GLFW

Signed-off-by: Tobias Frisch <tfrisch@uni-koblenz.de>

.github/workflows/linux.yml

@@ -23,11 +23,11 @@ jobs:
       - name: Install dependencies
         run: |
           sudo apt-get -qq update
-          sudo apt-get -qq install libvulkan-dev libvulkan1
+          sudo apt-get -qq install libvulkan-dev libvulkan1 libxrandr-dev libxrandr2
 
       - name: Build framework
         run: |
           mkdir build
           cd build
           cmake ..
-          make -j $(nproc)
\ No newline at end of file
+          make -j $(nproc)