gh actions update

Author: peppelinux

.github/workflows/python-package.yml

@@ -5,7 +5,7 @@ name: djangosaml2
 
 on:
   push:
-    branches: [ master ]
+    branches: [ master, dev ]
   pull_request:
     branches: [ master ]
 
@@ -15,7 +15,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: [3.6, 3.7, 3.8]
+        python-version: [3.8]
         django-version: ["2.2", "3.0", "master"]
 
     steps: