Update release_pypi.yml

Author: ilikecake

.github/workflows/release_pypi.yml

@@ -18,5 +18,5 @@ jobs:
     - name: Run PyPI Release CI workflow
       uses: adafruit/workflows-circuitpython-libs/release-pypi@main
       with:
-        pypi-username: __token__
+        pypi-username: ${{ secrets.pypi_username }}
         pypi-password: ${{ secrets.pypi_password }}