Upgrade to Greenmail 2.1.7

Closes gh-1706

Author: snicoll

spring-ws-platform/build.gradle

@@ -34,9 +34,9 @@ dependencies {
 	constraints {
 		api("com.fasterxml.woodstox:woodstox-core:7.1.1")
 		api("com.google.code.findbugs:jsr305:3.0.2")
-		api("com.icegreen:greenmail:2.1.4")
-		api("com.icegreen:greenmail-junit5:2.1.4")
-		api("com.icegreen:greenmail-spring:2.1.4")
+		api("com.icegreen:greenmail:2.1.7")
+		api("com.icegreen:greenmail-junit5:2.1.7")
+		api("com.icegreen:greenmail-spring:2.1.7")
 		api("com.sun.xml.messaging.saaj:saaj-impl:3.0.4")
 		api("commons-io:commons-io:2.19.0")
 		api("jakarta.activation:jakarta.activation-api:2.1.4")