Bump org.apache.maven.plugins:maven-site-plugin from 3.4 to 3.12.1 (#494

)

Bumps [org.apache.maven.plugins:maven-site-plugin](https://github.com/apache/maven-site-plugin) from 3.4 to 3.12.1.
- [Commits](apache/maven-site-plugin@maven-site-plugin-3.4...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-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pom.xml

@@ -135,7 +135,7 @@
         <maven.jaxb2-plugin.version>0.15.1</maven.jaxb2-plugin.version>
         <maven.resources.version>3.3.0</maven.resources.version>
         <maven.shade.version>3.1.1</maven.shade.version>
-        <maven.site.version>3.4</maven.site.version>
+        <maven.site.version>3.12.1</maven.site.version>
         <maven.source.plugin>3.3.1</maven.source.plugin>
         <maven.surefire.version>${maven.failsafe.version}</maven.surefire.version>
         <maven.xml.version>1.0.2</maven.xml.version>