pom.xml: update Jetty to 9.2.11.v20150529

@see https://github.com/eclipse/jetty.project/blob/master/VERSION.txt

No functional changes.

Author: php-coder

pom.xml

@@ -73,7 +73,7 @@
 		<hibernate-validator.version>5.1.3.Final</hibernate-validator.version>
 		<hibernate.version>4.3.6.Final</hibernate.version>
 		<javax-mail.version>1.5.4</javax-mail.version>
-		<jetty.version>8.1.16.v20140903</jetty.version>
+		<jetty.version>9.2.11.v20150529</jetty.version>
 		<liquibase.version>3.3.5</liquibase.version>
 		<mysql.version>5.1.36</mysql.version>
 		<slf4j.version>1.7.12</slf4j.version>