Bump pypa/gh-action-pypi-publish from 1.6.4 to 1.8.4

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@c7f29f7...29930c9)

---
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]>

Author: dependabot[bot]

.github/workflows/publish.yaml

@@ -66,12 +66,12 @@ jobs:
     steps:
       - uses: actions/download-artifact@9bc31d5ccc31df68ecc42ccf4149144866c47d8a
       # Try uploading to Test PyPI first, in case something fails.
-      - uses: pypa/gh-action-pypi-publish@c7f29f7adef1a245bd91520e94867e5c6eedddcc
+      - uses: pypa/gh-action-pypi-publish@29930c9cf57955dc1b98162d0d8bc3ec80d9e75c
         with:
           password: ${{ secrets.TEST_PYPI_TOKEN }}
           repository_url: https://test.pypi.org/legacy/
           packages_dir: artifact/
-      - uses: pypa/gh-action-pypi-publish@c7f29f7adef1a245bd91520e94867e5c6eedddcc
+      - uses: pypa/gh-action-pypi-publish@29930c9cf57955dc1b98162d0d8bc3ec80d9e75c
         with:
           password: ${{ secrets.PYPI_TOKEN }}
           packages_dir: artifact/