Bump dnsjava:dnsjava from 2.1.9 to 3.6.0 in /dspace-api

Bumps [dnsjava:dnsjava](https://github.com/dnsjava/dnsjava) from 2.1.9 to 3.6.0.
- [Release notes](https://github.com/dnsjava/dnsjava/releases)
- [Changelog](https://github.com/dnsjava/dnsjava/blob/master/Changelog)
- [Commits](dnsjava/dnsjava@v2.1.9...v3.6.0)

---
updated-dependencies:
- dependency-name: dnsjava:dnsjava
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

dspace-api/pom.xml

@@ -623,7 +623,7 @@
         <dependency>
             <groupId>dnsjava</groupId>
             <artifactId>dnsjava</artifactId>
-            <version>2.1.9</version>
+            <version>3.6.0</version>
         </dependency>
 
         <dependency>