add url to publish environment

.github/workflows/publish.yaml

@@ -15,7 +15,7 @@ jobs:
           python-version: '3.x'
           cache: 'pip'
           cache-dependency-path: 'requirements/*.txt'
-      - run: pip install -r requirements/build.txt
+      - run: pip install build
       # Use the commit date instead of the current date during the build.
       - run: echo "SOURCE_DATE_EPOCH=$(git log -1 --pretty=%ct)" >> $GITHUB_ENV
       - run: python -m build
@@ -56,12 +56,18 @@ jobs:
     needs: ['provenance']
     # Wait for approval before attempting to upload to PyPI. This allows reviewing the
     # files in the draft release.
-    environment: 'publish'
+    environment:
+      name: publish
+      url: https://pypi.org/project/Pallets-Sphinx-Themes/
     runs-on: ubuntu-latest
     permissions:
       id-token: write
     steps:
       - uses: actions/download-artifact@9bc31d5ccc31df68ecc42ccf4149144866c47d8a
+      - uses: pypa/gh-action-pypi-publish@a56da0b891b3dc519c7ee3284aff1fad93cc8598
+        with:
+          repository-url: https://test.pypi.org/legacy/
+          packages-dir: artifact/
       - uses: pypa/gh-action-pypi-publish@a56da0b891b3dc519c7ee3284aff1fad93cc8598
         with:
           packages-dir: artifact/