Use up-to-date version of PyPI publish Action

Fixes an outdated reference that aborted the last release attempt.

Author: bittner

.github/workflows/release.yml

@@ -37,7 +37,7 @@ jobs:
 
       - name: Upload packages to Jazzband
         if: github.event_name == 'push' && startsWith(github.ref, 'refs/tags')
-        uses: pypa/gh-action-pypi-publish@master
+        uses: pypa/gh-action-pypi-publish@release/v1
         with:
           user: jazzband
           password: ${{ secrets.JAZZBAND_RELEASE_KEY }}