Fix security issues: 3 CVEs resolved (opennlp-tools 2.5.8 → 2.5.9)

Change-Id: I558f9a39182d6c6036d91c9510c87233003647fb
diff --git a/pom.xml b/pom.xml
index 6d3081e..94106fe 100644
--- a/pom.xml
+++ b/pom.xml
@@ -381,7 +381,7 @@
         <dependency>
             <groupId>org.apache.opennlp</groupId>
             <artifactId>opennlp-tools</artifactId>
-            <version>2.5.8</version>
+            <version>2.5.9</version>
         </dependency>
         <dependency>
             <groupId>junit</groupId>