Remove redundant token parameter from checkout step

The token parameter is unnecessary as actions/checkout@v4 uses GITHUB_TOKEN by default.

Co-authored-by: dorkmo <1923070+dorkmo@users.noreply.github.com>

Author: Copilot

.github/workflows/openscad-render.yml

@@ -20,7 +20,6 @@ jobs:
         uses: actions/checkout@v4
         with:
           fetch-depth: 0  # Fetch full history for --force-with-lease to work correctly
-          token: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Install OpenSCAD
         run: |