Update to commons-codec 1.12

Fixes gh-6712

gradle/javaprojects.gradle

@@ -12,7 +12,7 @@ ext.apacheDsVersion = '1.5.5'
 ext.aspectjVersion = '1.8.13'
 ext.casClientVersion = '3.4.1'
 ext.cglibVersion = '3.2.10'
-ext.commonsCodecVersion = '1.10'
+ext.commonsCodecVersion = '1.12'
 ext.commonsCollectionsVersion = '3.2.2'
 ext.commonsLoggingVersion = '1.2'
 ext.ehcacheVersion = '2.10.6'