Bump the build-dependencies group with 2 updates

Bumps the build-dependencies group with 2 updates: [org.apache.maven.plugins:maven-javadoc-plugin](https://github.com/apache/maven-javadoc-plugin) and [com.github.siom79.japicmp:japicmp-maven-plugin](https://github.com/siom79/japicmp).


Updates `org.apache.maven.plugins:maven-javadoc-plugin` from 3.7.0 to 3.8.0
- [Release notes](https://github.com/apache/maven-javadoc-plugin/releases)
- [Commits](apache/maven-javadoc-plugin@maven-javadoc-plugin-3.7.0...maven-javadoc-plugin-3.8.0)

Updates `com.github.siom79.japicmp:japicmp-maven-plugin` from 0.21.2 to 0.22.0
- [Release notes](https://github.com/siom79/japicmp/releases)
- [Changelog](https://github.com/siom79/japicmp/blob/master/release.py)
- [Commits](siom79/japicmp@japicmp-base-0.21.2...japicmp-base-0.22.0)

---
updated-dependencies:
- dependency-name: org.apache.maven.plugins:maven-javadoc-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: build-dependencies
- dependency-name: com.github.siom79.japicmp:japicmp-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: build-dependencies
...

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

Author: dependabot[bot]

pom.xml

@@ -238,10 +238,10 @@
         <version.gmavenplus.plugin>3.0.2</version.gmavenplus.plugin>
         <version.gpg.plugin>3.2.4</version.gpg.plugin>
         <version.install.plugin>3.1.2</version.install.plugin>
-        <version.japicmp.plugin>0.21.2</version.japicmp.plugin>
+        <version.japicmp.plugin>0.22.0</version.japicmp.plugin>
         <version.jar.plugin>3.4.2</version.jar.plugin>
         <version.jqassistant.plugin>2.3.1</version.jqassistant.plugin>
-        <version.javadoc.plugin>3.7.0</version.javadoc.plugin>
+        <version.javadoc.plugin>3.8.0</version.javadoc.plugin>
         <version.license.plugin>4.5</version.license.plugin>
         <version.release.plugin>3.1.1</version.release.plugin>
         <version.resources.plugin>3.3.1</version.resources.plugin>