test: add sudo

.github/workflows/app-test.yml

@@ -32,7 +32,7 @@ jobs:
       - name: Install xvfb
         if: runner.os == 'Linux'
         run: |
-          apt install -y -q --no-install-recommends xvfb
+          sudo apt install -y -q --no-install-recommends xvfb
 
       - name: Setup NodeJS ${{ matrix.node_version }}
         uses: actions/setup-node@v3