fix: add gitpython installation to workflow

.github/workflows/compile-latex.yml

@@ -9,6 +9,15 @@ jobs:
       with:
         fetch-depth: 0  # Fetch full history to detect changes
 
+    - name: Set up Python
+      uses: actions/setup-python@v4
+      with:
+        python-version: '3.x'
+
+    - name: Install required Python packages
+      run: |
+        pip install gitpython
+
     - name: Set up Docker
       uses: docker/setup-buildx-action@v2