Update to UnboundID LdapSDK 6.0.9

Closes gh-778

Author: jzheaux

dependencies/build.gradle

@@ -25,7 +25,7 @@ dependencies {
 		api "org.apache.commons:commons-pool2:2.11.1"
 		api "ch.qos.logback:logback-classic:1.4.8"
 		api "com.google.code.typica:typica:1.7.2"
-		api "com.unboundid:unboundid-ldapsdk:6.0.8"
+		api "com.unboundid:unboundid-ldapsdk:6.0.9"
 		api "commons-codec:commons-codec:1.15"
 		api "commons-cli:commons-cli:1.5.0"
 		api "commons-collections:commons-collections:3.2.2"