[MPLUGIN-542] Update QDox to 2.2.0

This fixes parsing of annotations leveraging textblocks
(paul-hammant/qdox#124)

Author: kwin

pom.xml

@@ -244,7 +244,7 @@
       <dependency>
         <groupId>com.thoughtworks.qdox</groupId>
         <artifactId>qdox</artifactId>
-        <version>2.1.0</version>
+        <version>2.2.0</version>
       </dependency>
       <!-- for XHTML to plain text and HTML to XHTML conversion -->
       <dependency>