[ci.yaml] Main branch support (flutter#4440)

Casey Hillers · KyleFin · commit 9b96e683437a · 2021-12-21T10:14:56.000-07:00
diff --git a/.ci.yaml b/.ci.yaml
@@ -4,8 +4,9 @@
 # for every commit.
 #
 # More information at:
-#  * https://github.com/flutter/cocoon/blob/master/CI_YAML.md
+#  * https://github.com/flutter/cocoon/blob/main/CI_YAML.md
 enabled_branches:
+  - main
   - master
 
 platform_properties:
