fix: system dependencies

Author: Tony-Rome

.github/workflows/pelican.yml

@@ -23,6 +23,11 @@ jobs:
         with:
           python-version: "3.11"
 
+      - name: install system dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y libjpeg-dev zlib1g-dev libfreetype6-dev
+
       - name: install dependencies
         run: |
           python -m pip install --upgrade pip