point pypi release to their test instance

Author: BartoszBlizniak

.github/workflows/release.yml

@@ -158,3 +158,4 @@ jobs:
               uses: pypa/gh-action-pypi-publish@ed0c53931b1dc9bd32cbe73a98c7f6766f8a527e # v1.13.0
               with:
                   packages-dir: dist/
+                  repository-url: https://test.pypi.org/legacy/