set release env

Signed-off-by: Sylvain Hellegouarch <sh@defuze.org>

Author: Lawouach

.github/workflows/release.yaml

@@ -9,6 +9,7 @@ on:
 jobs:
   release-to-pypi:
     runs-on: ubuntu-20.04
+    environment: secrets
     steps:
     - uses: actions/checkout@v2
     - name: Set up Python