ci: install protoc in python lint workflow

Author: ChunxuTang

.github/workflows/python-test.yml

@@ -76,6 +76,16 @@ jobs:
         uses: actions/setup-python@v4
         with:
           python-version: "3.11"
+      - name: Setup Rust
+        uses: actions-rust-lang/setup-rust-toolchain@v1
+      - uses: Swatinem/rust-cache@v2
+        with:
+          workspaces: python
+          cache-targets: false
+      - name: Install system dependencies
+        run: |
+          sudo apt update
+          sudo apt install -y protobuf-compiler
       - name: Install uv
         uses: astral-sh/setup-uv@v3
       - name: Install dependencies