chore(deps): bump org.codehaus.mojo:versions-maven-plugin in /dhis-2

Bumps [org.codehaus.mojo:versions-maven-plugin](https://github.com/mojohaus/versions) from 2.17.1 to 2.18.0.
- [Release notes](https://github.com/mojohaus/versions/releases)
- [Changelog](https://github.com/mojohaus/versions/blob/master/ReleaseNotes.md)
- [Commits](mojohaus/versions@2.17.1...2.18.0)

---
updated-dependencies:
- dependency-name: org.codehaus.mojo:versions-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

dhis-2/pom.xml

@@ -237,7 +237,7 @@
     <maven-enforcer-plugin.version>3.5.0</maven-enforcer-plugin.version>
     <maven-dependency-plugin.version>3.5.0</maven-dependency-plugin.version>
     <restrict-imports-enforcer.version>2.6.0</restrict-imports-enforcer.version>
-    <versions-maven-plugin.version>2.17.1</versions-maven-plugin.version>
+    <versions-maven-plugin.version>2.18.0</versions-maven-plugin.version>
     <dependency-check-maven.version>11.1.0</dependency-check-maven.version>
     <spotbugs-maven-plugin.version>4.8.6.6</spotbugs-maven-plugin.version>
     <spotless.version>2.43.0</spotless.version>