GitLab

Bumps [flatten-maven-plugin](https://github.com/mojohaus/flatten-maven-plugin) from 1.4.1 to 1.5.0.
- [Release notes](https://github.com/mojohaus/flatten-maven-plugin/releases)
- [Commits](https://github.com/mojohaus/flatten-maven-plugin/compare/1.4.1...1.5.0)

---
updated-dependencies:
- dependency-name: org.codehaus.mojo:flatten-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...
Signed-off-by: dependabot[bot] <support@github.com>