JCR-5133: Update easymock dependency to 5.5.0 (#225)

Author: reschke

jackrabbit-parent/pom.xml

@@ -612,7 +612,7 @@
       <dependency>
         <groupId>org.easymock</groupId>
         <artifactId>easymock</artifactId>
-        <version>5.4.0</version>
+        <version>5.5.0</version>
       </dependency>
       <dependency>
         <groupId>junit</groupId>