fix(deps): bump com.github.siom79.japicmp:japicmp-maven-plugin

Bumps [com.github.siom79.japicmp:japicmp-maven-plugin](https://github.com/siom79/japicmp) from 0.21.1 to 0.21.2.
- [Release notes](https://github.com/siom79/japicmp/releases)
- [Changelog](https://github.com/siom79/japicmp/blob/master/release.py)
- [Commits](siom79/japicmp@japicmp-base-0.21.1...japicmp-base-0.21.2)

---
updated-dependencies:
- dependency-name: com.github.siom79.japicmp:japicmp-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

pom.xml

@@ -1564,7 +1564,7 @@
                <!-- defined under pluginManagement to reuse config in plugin and reporting section, see https://stackoverflow.com/questions/32136828/share-maven-plugin-configuration-between-build-and-reporting-sections/32181937#32181937 -->
                <groupId>com.github.siom79.japicmp</groupId>
                <artifactId>japicmp-maven-plugin</artifactId>
-               <version>0.21.1</version>
+               <version>0.21.2</version>
                <configuration>
                   <skip>${skip.japicmp.cmp}</skip>
                   <parameter>