update: add environment specification for PyPI publishing job

Author: t3tra-dev

.github/workflows/release.yml

@@ -278,6 +278,8 @@ jobs:
     runs-on: ubuntu-latest
     if: ${{ startsWith(github.ref, 'refs/tags/v') }}
     needs: [linux, windows, macos, sdist]
+    environment:
+      name: pypi
     permissions:
       contents: read
       id-token: write