fix: install python3-pyelftools in build job

.github/workflows/build-module.yml

@@ -56,6 +56,11 @@ jobs:
       - name: Checkout AWG source code
         uses: actions/checkout@v4
 
+      - name: Install Python dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y python3-pyelftools
+
       - name: Cache OpenWrt SDK
         id: cache-sdk
         uses: actions/cache@v4