Test the package name for a dev sign not to publish a dev version

Author: StSav012

.github/workflows/publish-to-pypi.yml

@@ -61,7 +61,15 @@ jobs:
           name: python-package-distributions
           path: dist/
 
+      - name: Test the package name for a dev sign
+        id: test-package-name
+        run: |
+          echo "devs=$(find dist -iname "*.dev*" -exec echo {} +)" | tee -a "${GITHUB_OUTPUT}"
+        shell: bash
+
       - name: Publish to PyPI
+        # don't publish if it's a dev release
+        if: steps.test-package-name.outputs.devs == ''
         uses: pypa/gh-action-pypi-publish@release/v1
 
   publish-to-testpypi:
@@ -87,4 +95,5 @@ jobs:
       - name: Publish to TestPyPI
         uses: pypa/gh-action-pypi-publish@release/v1
         with:
+          skip-existing: true
           repository-url: https://test.pypi.org/legacy/