CI: Install protoc in the CI image

Signed-off-by: Alexandru Vasile <[email protected]>

Author: lexnv

.github/workflows/rust.yml

@@ -15,6 +15,12 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
+    - name: Install protobuf-compiler
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y protobuf-compiler
+        protoc --version  # Verify installation
+
     - uses: actions/checkout@v3
     - name: Build
       run: cargo build --verbose