Bump flatten-maven-plugin from 1.2.7 to 1.3.0 (#605)

Author: dependabot[bot]

pom.xml

@@ -1425,7 +1425,7 @@
           <plugin>
             <groupId>org.codehaus.mojo</groupId>
             <artifactId>flatten-maven-plugin</artifactId>
-            <version>1.2.7</version>
+            <version>1.3.0</version>
             <configuration>
               <updatePomFile>true</updatePomFile>
             </configuration>