build(deps): update dependency org.codehaus.mojo:flatten-maven-plugin to v1.2.4 (#170)

Author: renovate-bot

pom.xml

@@ -226,7 +226,7 @@
         <plugin>
           <groupId>org.codehaus.mojo</groupId>
           <artifactId>flatten-maven-plugin</artifactId>
-          <version>1.2.3</version>
+          <version>1.2.4</version>
           <executions>
             <!-- enable flattening -->
             <execution>