Upgrade commons-lang3 to 3.8.1

Change-Id: Ifa2d12a1b4aceb829400c45f5ff998e1b6d08dc2
diff --git a/WORKSPACE b/WORKSPACE
index 8d82f1c..6f89ef6 100644
--- a/WORKSPACE
+++ b/WORKSPACE
@@ -298,8 +298,8 @@
 
 maven_jar(
     name = "commons-lang3",
-    artifact = "org.apache.commons:commons-lang3:3.6",
-    sha1 = "9d28a6b23650e8a7e9063c04588ace6cf7012c17",
+    artifact = "org.apache.commons:commons-lang3:3.8.1",
+    sha1 = "6505a72a097d9270f7a9e7bf42c4238283247755",
 )
 
 maven_jar(