Bump flatten-maven-plugin from 1.4.0 to 1.4.1 (#3005)

Bumps [flatten-maven-plugin](https://github.com/mojohaus/flatten-maven-plugin) from 1.4.0 to 1.4.1.
- [Release notes](https://github.com/mojohaus/flatten-maven-plugin/releases)
- [Commits](mojohaus/flatten-maven-plugin@1.4.0...1.4.1)

---
updated-dependencies:
- dependency-name: org.codehaus.mojo:flatten-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

assertj-bom/pom.xml

@@ -35,7 +35,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>flatten-maven-plugin</artifactId>
-        <version>1.4.0</version>
+        <version>1.4.1</version>
         <inherited>false</inherited>
         <executions>
           <execution>