Upgrade junit to 4.12

Change-Id: I2c9cc991f149f5d24a4d489613f8dfda5cc4bcca

WORKSPACE

diff --git a/WORKSPACE b/WORKSPACE
index 0d73484..67fa826 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -183,8 +183,8 @@
 
 maven_jar(
     name = "junit",
-    artifact = "junit:junit:4.11",
-    sha1 = "4e031bb61df09069aeb2bffb4019e7a5034a4ee0",
+    artifact = "junit:junit:4.12",
+    sha1 = "2973d150c0dc1fefe998f834810d68f278ea58ec",
 )
 
 maven_jar(