Update soy to 2017-04-23

Change-Id: I941ea2e8c60217eb45c6dda9566647cf4c3d1f04

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index fe710dd..cb140bc 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -105,8 +105,8 @@
 
 maven_jar(
     name = "soy",
-    artifact = "com.google.template:soy:2017-02-01",
-    sha1 = "8638940b207779fe3b75e55b6e65abbefb6af678",
+    artifact = "com.google.template:soy:2017-04-23",
+    sha1 = "52f32a5a3801ab97e0909373ef7f73a3460d0802",
 )
 
 maven_jar(