Bump commons-net from 3.6 to 3.9.0

Bumps commons-net from 3.6 to 3.9.0.

---
updated-dependencies:
- dependency-name: commons-net:commons-net
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

pom.xml

@@ -64,7 +64,7 @@
     <dependency>
       <groupId>commons-net</groupId>
       <artifactId>commons-net</artifactId>
-      <version>3.6</version>
+      <version>3.9.0</version>
     </dependency>
   </dependencies>
 </project>