fix

.github/workflows/build.yaml

@@ -7,6 +7,8 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v3
+      - name: Install ImageMagick
+        run: sudo apt-get update && sudo apt-get install -y imagemagick
       - name: Generate Pictures
         run: |
           make -C typst-report