add libclang to CI

Author: rdmsr

.github/workflows/rust.yml

@@ -13,6 +13,9 @@ jobs:
       - name: Checkout code
         uses: actions/checkout@v3
 
+      - name: Install libclang
+        run: sudo apt-get install -y libclang-dev
+
       - name: Set up Rust
         uses: moonrepo/setup-rust@v1
         with: