Added dependencies for examples to Github action

.github/workflows/rust.yml

@@ -18,6 +18,8 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - uses: jwsi/submodule-checkout@v1
+    - name: Install dependencies
+      run: apt update && apt install -y libxcb-shape0-dev libxcb-xfixes0-dev
     - name: Build
       run: cargo build --verbose
     - name: Run tests