CI: Travis updated OSX, downgrade xcode.

Select xcode 9.3 while Sencha doesn't support Java >8.
7 years ago · 44c1f7e348
1 changed files with 2 additions and 0 deletions
--- a/.travis.yml
+++ b/.travis.yml
@ -15,6 +15,8 @@ branches:
 os:
  - osx

+osx_image: xcode9.3
+
 cache:
  directories:
    - node_modules