update codecov token

Author: ponytailer

.github/workflows/ci.yml

@@ -31,6 +31,8 @@ jobs:
         run: uv run pytest tests/ --cov=pydantic_client --cov-report=term-missing:skip-covered --cov-report=xml
       - name: Upload coverage
         uses: codecov/codecov-action@v4
+        with:
+            token: ${{ secrets.CODECOV_TOKEN }}
 
   automerge:
     needs: test