Install libxkbcommon-dev for ubuntu-latest in CI

.github/workflows/test.yml

@@ -12,6 +12,12 @@ jobs:
       with:
         rust-version: ${{ matrix.rust }}
     - uses: actions/checkout@master
+    - name: Install dependencies
+      if: matrix.os == 'ubuntu-latest'
+      run: |
+        export DEBIAN_FRONTED=noninteractive
+        sudo apt-get -qq update
+        sudo apt-get install -y libxkbcommon-dev
     - name: Run tests
       run: |
         cargo test --verbose --all