Build package in release action. (#205)

Author: smithdc1

.github/workflows/publish.yml

@@ -42,5 +42,10 @@ jobs:
     permissions:
       id-token: write  # IMPORTANT: this permission is mandatory for trusted publishing
     steps:
-    - name: Publish package distributions to PyPI
-      uses: pypa/gh-action-pypi-publish@release/v1
+      - name: build
+        run: |
+          python -m pip install build
+          python -m pip install --upgrade build
+          python -m build
+      - name: Publish package distributions to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1