appveyor.yml: Add 9.3-backports branch (#600)

t-b · bourtemb · commit ad117829cbdc · 2019-10-22T17:59:51.000+02:00
diff --git a/appveyor.yml b/appveyor.yml
@@ -2,6 +2,7 @@ version: 0.0.{build}
 branches:
   only:
     - tango-9-lts
+    - 9.3-backports
 environment:
   matrix:
     - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2017
