Bump flatten-maven-plugin from 1.2.2 to 1.2.3 (#21)

Bumps [flatten-maven-plugin](https://github.com/mojohaus/flatten-maven-plugin) from 1.2.2 to 1.2.3.
- [Release notes](https://github.com/mojohaus/flatten-maven-plugin/releases)
- [Commits](mojohaus/flatten-maven-plugin@flatten-maven-plugin-1.2.2...flatten-maven-plugin-1.2.3)

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

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

Author: dependabot-preview[bot]

pom.xml

@@ -188,7 +188,7 @@
 				<plugin>
 					<groupId>org.codehaus.mojo</groupId>
 					<artifactId>flatten-maven-plugin</artifactId>
-					<version>1.2.2</version>
+					<version>1.2.3</version>
 				</plugin>
 				<plugin>
 					<groupId>org.sonarsource.scanner.maven</groupId>