chore: use Xcode 12 in CI

kylef · kylef · commit 5984bf2bb670 · 2021-03-13T08:50:23.000Z
diff --git a/.travis.yml b/.travis.yml
@@ -1,5 +1,5 @@
 matrix:
   include:
     - os: osx
-      osx_image: xcode10
+      osx_image: xcode12
 script: swift test
