WSS-707 - Updating XML Security to 2.2.6 (#223)

diff --git a/parent/pom.xml b/parent/pom.xml
index 42aa87e..df605ae 100644
--- a/parent/pom.xml
+++ b/parent/pom.xml
@@ -46,7 +46,7 @@
         <slf4j.version>1.7.36</slf4j.version>
         <wsdl4j.version>1.6.3</wsdl4j.version>
         <xz.version>1.8</xz.version>
-        <xmlsec.version>2.2.4</xmlsec.version>
+        <xmlsec.version>2.2.6</xmlsec.version>
         <xmlunit.version>2.7.0</xmlunit.version>
         <joda.version>2.10.10</joda.version>   
         <!-- OSGi related properties -->