build(deps): bump org.apache.maven.plugins:maven-site-plugin

Bumps [org.apache.maven.plugins:maven-site-plugin](https://github.com/apache/maven-site-plugin) from 3.12.1 to 3.20.0.
- [Release notes](https://github.com/apache/maven-site-plugin/releases)
- [Commits](apache/maven-site-plugin@maven-site-plugin-3.12.1...maven-site-plugin-3.20.0)

---
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] <support@github.com>

pom.xml

@@ -79,7 +79,7 @@
         <maven-clean-plugin-version>3.4.0</maven-clean-plugin-version>
         <maven-enforcer-plugin-version>3.5.0</maven-enforcer-plugin-version>
         <maven-resources-plugin-version>3.3.1</maven-resources-plugin-version>
-        <maven-site-plugin-version>3.12.1</maven-site-plugin-version>
+        <maven-site-plugin-version>3.20.0</maven-site-plugin-version>
         <maven-pmd-plugin-version>3.24.0</maven-pmd-plugin-version>
         <maven-pmd-plugin-asm-version>9.7</maven-pmd-plugin-asm-version>
         <maven-pmd-plugin-shared-utils-version>3.4.2</maven-pmd-plugin-shared-utils-version>