fix: install canvas system dependencies in CML workflow

.github/workflows/train.yml

@@ -27,6 +27,11 @@ jobs:
         pip install --extra-index-url https://download.pytorch.org/whl/cpu -r requirements.txt
         pip install ruff pytest pytest-asyncio
 
+    - name: Install system dependencies for canvas (CML)
+      run: |
+        sudo apt-get update
+        sudo apt-get install -y build-essential libcairo2-dev libpango1.0-dev libjpeg-dev libgif-dev librsvg2-dev
+
     - name: Setup CML
       uses: iterative/setup-cml@v2