bump vale version

2017-05-24 15:18:43 -07:00 · 2017-05-24 15:18:43 -07:00 · 31af03cacc
--- a/tools/vale
+++ b/tools/vale
@ -1 +1 @@
-Subproject commit 78f3730f8a6051408f3d9aaf570b1cf8b887d502
+Subproject commit 687e4a452226eb0b8b1fe1522c618ca239e9dd8b