Update to Commons Codec 1.16.0

Closes gh-789

Author: jzheaux

dependencies/build.gradle

@@ -26,7 +26,7 @@ dependencies {
 		api "ch.qos.logback:logback-classic:1.4.8"
 		api "com.google.code.typica:typica:1.7.2"
 		api "com.unboundid:unboundid-ldapsdk:6.0.9"
-		api "commons-codec:commons-codec:1.15"
+		api "commons-codec:commons-codec:1.16.0"
 		api "commons-cli:commons-cli:1.5.0"
 		api "commons-httpclient:commons-httpclient:3.1"
 		api "commons-lang:commons-lang:2.6"