Newer yaml.v2

diff --git a/src/gopkg.in/yaml.v2 b/src/gopkg.in/yaml.v2
index 287cf08546ab5e7e37d55a84f7ed3fd1db036de5..7f97868eec74b32b0982dd158a51a446d1da7eb5 160000 (submodule)
--- a/src/gopkg.in/yaml.v2
+++ b/src/gopkg.in/yaml.v2
@@ -1 +1 @@
-Subproject commit 287cf08546ab5e7e37d55a84f7ed3fd1db036de5
+Subproject commit 7f97868eec74b32b0982dd158a51a446d1da7eb5