Bump maven-site-plugin from 3.11.0 to 3.12.0

Bumps [maven-site-plugin](https://github.com/apache/maven-site-plugin) from 3.11.0 to 3.12.0.
- [Release notes](https://github.com/apache/maven-site-plugin/releases)
- [Commits](apache/maven-site-plugin@maven-site-plugin-3.11.0...maven-site-plugin-3.12.0)

---
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]>

Author: dependabot[bot]

pom.xml

@@ -130,7 +130,7 @@
         <maven-release-plugin.version>3.0.0-M5</maven-release-plugin.version>
         <maven-resources-plugin.version>3.2.0</maven-resources-plugin.version>
         <maven-scm-publish-plugin.version>3.1.0</maven-scm-publish-plugin.version>
-        <maven-site-plugin.version>3.11.0</maven-site-plugin.version>
+        <maven-site-plugin.version>3.12.0</maven-site-plugin.version>
         <maven-source-plugin.version>3.2.1</maven-source-plugin.version>
         <maven-surefire-plugin.version>3.0.0-M6</maven-surefire-plugin.version>
         <nexus-staging-maven-plugin.version>1.6.13</nexus-staging-maven-plugin.version>