Bump maven-site-plugin from 4.0.0-M7 to 4.0.0-M8

Bumps [maven-site-plugin](https://github.com/apache/maven-site-plugin) from 4.0.0-M7 to 4.0.0-M8.
- [Release notes](https://github.com/apache/maven-site-plugin/releases)
- [Commits](https://github.com/apache/maven-site-plugin/compare/maven-site-plugin-4.0.0-M7...maven-site-plugin-4.0.0-M8)

---
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] <support@github.com>
1 file changed