Turn off all permissions.

Author: stefanholek

.github/workflows/python-package.yml

@@ -10,6 +10,8 @@ concurrency:
   group: ${{ github.workflow }}-${{ github.ref }}
   cancel-in-progress: true
 
+permissions: {}
+
 env:
   PIP_DISABLE_PIP_VERSION_CHECK: 1
   PIP_NO_PYTHON_VERSION_WARNING: 1