Migrate deprecated GitHub PyPi action

Author: mstoelzle

.github/workflows/release.yml

@@ -23,7 +23,7 @@ jobs:
     - name: Build
       run: python -m build .
     - name: Publish
-      uses: pypa/gh-action-pypi-publish@master
+      uses: pypa/gh-action-pypi-publish@release/v1
       with:
         password: ${{ secrets.pypi_password }}
-        skip_existing: true
+        skip-existing: true