Updated Weka/PDM library to 3.8.3.1.

Author: Mark Hall

lib/pdm-ce-3.8.1.1.jar lib/pdm-ce-3.8.3.1.jarlib/pdm-ce-3.8.1.1.jar renamed to lib/pdm-ce-3.8.3.1.jar

@@ -12,7 +12,7 @@
     <maven.compiler.target>1.8</maven.compiler.target>
     <maven.compiler.source>1.8</maven.compiler.source>
     <kettle.version>9.0.0.0-SNAPSHOT</kettle.version>
-    <weka.version>3.8.1.1</weka.version>
+    <weka.version>3.8.3.1</weka.version>
     <weka.timeseries.version>1.0.25</weka.timeseries.version>
     <weka.kfkettle.version>1.0.5</weka.kfkettle.version>
     <xpp-min.version>1.1.3.4.O</xpp-min.version>