Remove superfluous absolute path to action script

It is no longer necessary to specify the full path to the script in the invocation command now that the steps working
directory has been set to the root folder of the action repository.

Author: per1234

action.yml

@@ -108,4 +108,4 @@ runs:
       working-directory: ${{ github.action_path }}
       run: |
         poetry run \
-          python "${{ github.action_path }}/compilesketches/compilesketches.py"
+          python compilesketches/compilesketches.py