Update test.yml

- python 2.7 support removed from GH Actions

Author: ashah-splunk

.github/workflows/test.yml

@@ -11,7 +11,7 @@ jobs:
       matrix:
         os:
           - ubuntu-latest
-        python: [ 2.7, 3.7 ]
+        python: 3.7
         splunk-version:
           - "8.1"
           - "8.2"