Bump maven-site-plugin from 3.12.0 to 3.12.1

Bumps [maven-site-plugin](https://github.com/apache/maven-site-plugin) from 3.12.0 to 3.12.1.
- [Release notes](https://github.com/apache/maven-site-plugin/releases)
- [Commits](apache/maven-site-plugin@maven-site-plugin-3.12.0...maven-site-plugin-3.12.1)

---
updated-dependencies:
- dependency-name: org.apache.maven.plugins:maven-site-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

pom.xml

@@ -29,7 +29,7 @@
         <jxr.version>3.2.0</jxr.version>
         <taglist.version>3.0.0</taglist.version>
         <spotbugs.version>4.7.1.1</spotbugs.version>
-        <m3.site.version>3.12.0</m3.site.version>
+        <m3.site.version>3.12.1</m3.site.version>
         <changelog.version>2.2</changelog.version>
         <changelog.version>2.2</changelog.version>
         <jacoco.version>0.8.8</jacoco.version>