REL: fix auto-publish workflow

.github/workflows/cd.yml

@@ -2,6 +2,9 @@ name: CD
 on:
   push:
     tags: v*
+  pull_request:
+    paths:
+    - .github/workflows/cd.yml
 jobs:
   publish:
     runs-on: ubuntu-latest
@@ -13,12 +16,13 @@ jobs:
       with:
         python-version: '3.10'
     - name: Install build dependencies
-      run: python3 -m pip install build wheel
+      run: python -m pip install build wheel
     - name: Build distributions
       shell: bash -l {0}
-      run: python setup.py sdist bdist_wheel
+      run: python -m build
     - name: Publish package to PyPI
-      uses: pypa/gh-action-pypi-publish@v1.4.2
+      if: github.event_name == 'push' && startsWith(github.event.ref, 'refs/tags/v')
+      uses: pypa/gh-action-pypi-publish@v1.6.4
       with:
         user: __token__
         password: ${{ secrets.pypi_token }}