ci: skip-existing on PyPI publish for re-releases (#154)

Allows re-tagging 0.1.0 to publish create-awesome-python-app after
core is already on PyPI.

Co-authored-by: ulises-jeremias <ulises.jeremias@users.noreply.github.com>

Author: ulises-jeremias

.github/workflows/publish.yml

@@ -52,9 +52,10 @@ jobs:
         uses: pypa/gh-action-pypi-publish@release/v1
         with:
           packages-dir: dist-core/
+          skip-existing: true
       - name: Publish create-awesome-python-app to PyPI
         if: startsWith(github.ref, 'refs/tags/')
-        continue-on-error: true
         uses: pypa/gh-action-pypi-publish@release/v1
         with:
           packages-dir: dist-cli/
+          skip-existing: true