Explicit file path

Should latch onto the file in question now

.github/workflows/render.yml

@@ -14,6 +14,7 @@ jobs:
       uses: docker://ghcr.io/racklet/render-drawio-action:v1
       with:
         formats: 'png'
+        files: 'Wires.drawio.xml:wires.png'
       id: render
     - name: List the rendered files
       run: 'ls -l ${{ steps.render.outputs.rendered-files }}'