Bump pypa/gh-action-pypi-publish from 1.6.4 to 1.8.4 (#429)

Bumps [pypa/gh-action-pypi-publish](https://github.com/pypa/gh-action-pypi-publish) from 1.6.4 to 1.8.4.
- [Release notes](https://github.com/pypa/gh-action-pypi-publish/releases)
- [Commits](pypa/gh-action-pypi-publish@v1.6.4...v1.8.4)

---
updated-dependencies:
- dependency-name: pypa/gh-action-pypi-publish
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/pypi.yaml

@@ -72,7 +72,7 @@ jobs:
 
       - name: Publish package to TestPyPI
         if: github.event_name == 'push'
-        uses: pypa/gh-action-pypi-publish@v1.6.4
+        uses: pypa/gh-action-pypi-publish@v1.8.4
         with:
           password: ${{ secrets.TESTPYPI_TOKEN }}
           repository_url: https://test.pypi.org/legacy/
@@ -89,7 +89,7 @@ jobs:
           name: releases
           path: dist
       - name: Publish package to PyPI
-        uses: pypa/gh-action-pypi-publish@v1.6.4
+        uses: pypa/gh-action-pypi-publish@v1.8.4
         with:
           password: ${{ secrets.PYPI_PASSWORD }}
           verbose: true