Bumps `targetMavenVersion` from 3.9.5 to 3.9.6.

Updates `org.apache.maven:maven-plugin-api` from 3.9.5 to 3.9.6
- [Release notes](https://github.com/apache/maven/releases)
- [Commits](apache/maven@maven-3.9.5...maven-3.9.6)

Updates `org.apache.maven:maven-core` from 3.9.5 to 3.9.6
- [Release notes](https://github.com/apache/maven/releases)
- [Commits](apache/maven@maven-3.9.5...maven-3.9.6)

Updates `org.apache.maven:maven-artifact` from 3.9.5 to 3.9.6
- [Release notes](https://github.com/apache/maven/releases)
- [Commits](apache/maven@maven-3.9.5...maven-3.9.6)

Updates `org.apache.maven:maven-compat` from 3.9.5 to 3.9.6
- [Release notes](https://github.com/apache/maven/releases)
- [Commits](apache/maven@maven-3.9.5...maven-3.9.6)

---
updated-dependencies:
- dependency-name: org.apache.maven:maven-plugin-api
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.apache.maven:maven-core
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.apache.maven:maven-artifact
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.apache.maven:maven-compat
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>