Update pythonpublish.yml

Author: sserrata

.github/workflows/pythonpublish.yml

@@ -6,6 +6,7 @@ on:
 
 jobs:
   deploy:
+    if: github.repository_owner	 == 'PaloAltoNetworks'
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2