Updated variable name

Author: sujata-m

.github/workflows/publish_to_test.yml

@@ -39,5 +39,5 @@ jobs:
         uses: pypa/gh-action-pypi-publish@release/v1
         with:
           skip_existing: true
-          password: ${{ secrets.TEST_PYPI_API_TOKEN }}
+          password: ${{ secrets.PYPI_API_TOKEN }}
           repository_url: https://test.pypi.org/legacy/