readjust condition in CI syntax

Author: 2bndy5

.github/workflows/release.yml

@@ -139,4 +139,4 @@ jobs:
         if: github.repository == 'nRF24/CircuitPython_nRF24L01'
         uses: pypa/gh-action-pypi-publish@ed0c53931b1dc9bd32cbe73a98c7f6766f8a527e # v1.13.0
         with:
-          repository-url: https://${{github.event_name == 'workflow_dispatch' && 'test' || 'upload' }}.pypi.org/legacy/
+          repository-url: https://${{ startsWith(github.ref, 'refs/tags/v') && 'upload' || 'test' }}.pypi.org/legacy/