Update ice4j. (#2232)

* Agent should fail on SocketNotFoundException
* Don't start multiple PaceMakers for a single CheckList.

Author: JonathanLennox

pom.xml

@@ -106,7 +106,7 @@
             <dependency>
                 <groupId>${project.groupId}</groupId>
                 <artifactId>ice4j</artifactId>
-                <version>3.2-0-g63cddcd</version>
+                <version>3.2-2-gb4c8cd1</version>
             </dependency>
             <dependency>
                 <groupId>${project.groupId}</groupId>