fix: move fetch depth adjustment to the demo instead of the template checkout in the update-demo workflow

Author: 56kyle

.github/workflows/update-demo.yml

@@ -19,13 +19,13 @@ jobs:
       - name: Checkout Template
         uses: actions/checkout@v4
         with:
-          fetch-depth: 0
           repository: ${{ github.repository }}
           path: "${{ github.workspace }}/cookiecutter-robust-python"
 
       - name: Checkout Demo
         uses: actions/checkout@v4
         with:
+          fetch-depth: 0
           repository: "${{ github.repository_owner }}/${{ inputs.demo_name }}"
           path: ${{ inputs.demo_name }}
           ref: develop