GH-3463: Upgrade commons-net to 3.7.2

Fixes #3463

Author: artembilan

build.gradle

@@ -56,7 +56,7 @@ ext {
 	awaitilityVersion = '4.0.3'
 	commonsDbcp2Version = '2.8.0'
 	commonsIoVersion = '2.8.0'
-	commonsNetVersion = '3.7'
+	commonsNetVersion = '3.7.2'
 	curatorVersion = '4.3.0'
 	derbyVersion = '10.14.2.0'
 	ftpServerVersion = '1.1.1'