Fix publication script

.github/workflows/publish.yml

@@ -3,6 +3,7 @@ name: Publish Package
 on:
   release:
     types: [published]
+  workflow_dispatch:
 
 jobs:
   deploy:
@@ -21,13 +22,13 @@ jobs:
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
-          python -m pip install jupyterlab~=3.0 jupyter_packaging~=0.7.9 setuptools>=40.8.0 wheel twine
+          python -m pip install "jupyterlab~=3.0" "jupyter_packaging~=0.10,<2" twine build
       - name: Build and publish package
         run: |
           jlpm
 
-          python setup.py sdist bdist_wheel
-          twine upload dist/*
+          python -m build
+          twine upload --skip-existing dist/*
 
           npm publish --access=public
         env: