Update previous stable to 6.0.9.Final

Author: gsmet

pom.xml

@@ -116,7 +116,7 @@
         <tck.version>2.0.2.Final</tck.version>
 
         <!-- Version to be used as baseline for API/SPI change reports -->
-        <previous.stable>6.0.4.Final</previous.stable>
+        <previous.stable>6.0.9.Final</previous.stable>
 
         <paranamer.version>2.8</paranamer.version>
         <javax.el.version>3.0.1-b09</javax.el.version>