Bump flatten-maven-plugin from 1.2.5 to 1.2.7 (#398)

Bumps [flatten-maven-plugin](https://github.com/mojohaus/flatten-maven-plugin) from 1.2.5 to 1.2.7.
- [Release notes](https://github.com/mojohaus/flatten-maven-plugin/releases)
- [Commits](mojohaus/flatten-maven-plugin@flatten-maven-plugin-1.2.5...flatten-maven-plugin-1.2.7)

Signed-off-by: dependabot[bot] <[email protected]>

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

pom.xml

@@ -1289,7 +1289,7 @@
           <plugin>
             <groupId>org.codehaus.mojo</groupId>
             <artifactId>flatten-maven-plugin</artifactId>
-            <version>1.2.5</version>
+            <version>1.2.7</version>
             <configuration>
               <updatePomFile>true</updatePomFile>
             </configuration>