Update pythonpackage.yml

Author: sserrata

.github/workflows/pythonpackage.yml

@@ -4,17 +4,17 @@ on:
   push:
     branches:
       - master
-  pull_request:
+  pull_request_target:
     branches:
       - master
 
 jobs:
   build:
-
+    if: github.repository_owner	 == 'PaloAltoNetworks'
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [2.7, 3.5, 3.6, 3.7, 3.8]
+        python-version: [2.7, 3.5, 3.6, 3.7, 3.8, 3.9]
 
     steps:
     - uses: actions/checkout@v2