fix(cd): remove empty env blocks from OIDC migration

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: n24q02m

.github/workflows/cd.yml

@@ -86,4 +86,3 @@ jobs:
 
       - name: Publish to PyPI
         run: uv publish
-        env: