Bump htmlunit 2.70.0 (#54)

Author: vharseko

openig-doc/pom.xml

@@ -119,7 +119,7 @@
     <dependency>
       <groupId>net.sourceforge.htmlunit</groupId>
       <artifactId>htmlunit</artifactId>
-      <version>2.37.0</version>
+      <version>2.70.0</version>
       <scope>test</scope>
     </dependency>