1.2.x: Bump org.codehaus.mojo:versions-maven-plugin

Bumps the maven-dev-deps group with 1 update: [org.codehaus.mojo:versions-maven-plugin](https://github.com/mojohaus/versions).


Updates `org.codehaus.mojo:versions-maven-plugin` from 2.20.1 to 2.21.0
- [Release notes](https://github.com/mojohaus/versions/releases)
- [Changelog](https://github.com/mojohaus/versions/blob/master/ReleaseNotes.md)
- [Commits](mojohaus/versions@2.20.1...2.21.0)

---
updated-dependencies:
- dependency-name: org.codehaus.mojo:versions-maven-plugin
  dependency-version: 2.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: maven-dev-deps
...

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

Author: dependabot[bot]

pom.xml

@@ -282,7 +282,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>versions-maven-plugin</artifactId>
-        <version>2.20.1</version>
+        <version>2.21.0</version>
         <configuration>
           <ignoredVersions>.*-(alpha|beta|M)[-0-9]+</ignoredVersions>
         </configuration>