Update go-yaml dependency

diff --git a/src/github.com/go-yaml/yaml b/src/github.com/go-yaml/yaml
index a83829b6f1293c91addabc89d0571c246397bbf4..e4d366fc3c7938e2958e662b4258c7a89e1f0e3e 160000 (submodule)
--- a/src/github.com/go-yaml/yaml
+++ b/src/github.com/go-yaml/yaml
@@ -1 +1 @@
-Subproject commit a83829b6f1293c91addabc89d0571c246397bbf4
+Subproject commit e4d366fc3c7938e2958e662b4258c7a89e1f0e3e