Upgrade XMLSEC to 2.3.1.

Author: gregturn

pom.xml

@@ -116,7 +116,7 @@
 		<woodstox.version>4.2.0</woodstox.version>
 		<wsdl4j.version>1.6.3</wsdl4j.version>
 		<wss4j.version>2.4.1</wss4j.version>
-		<xmlsec.version>2.3.0</xmlsec.version>
+		<xmlsec.version>2.3.1</xmlsec.version>
 		<xml-schema-core.version>2.2.2</xml-schema-core.version>
 		<xmlunit1.version>1.6</xmlunit1.version>
 		<xmlunit.version>2.7.0</xmlunit.version>