[3.5] Only run AppVeyor on long-lived branches (GH-1941)

Also on the short-lived `buildbot-custom` branch.
(cherry picked from commit d3bedf356aca04ed9135a84b08)

diff --git a/.github/appveyor.yml b/.github/appveyor.yml
index 60c2dae444761e8443ee2dde9b8d3d233328ba43..5d11a0788b48efaae4806c220d94d1ba5e2affa6 100644 (file)
--- a/.github/appveyor.yml
+++ b/.github/appveyor.yml
@@ -1,5 +1,10 @@
 version: 3.5.3+.{build}
 clone_depth: 5
+branches:
+  only:
+    - master
+    - /\d\.\d/
+    - buildbot-custom
 build_script:
 - cmd: PCbuild\build.bat -e
 test_script: