[maven-release-plugin] prepare for next development iteration

pom.xml

@@ -3,7 +3,7 @@
     <groupId>net.datafaker</groupId>
     <artifactId>datafaker</artifactId>
     <packaging>jar</packaging>
-    <version>2.4.0</version>
+    <version>2.4.1-SNAPSHOT</version>
     <name>Datafaker</name>
     <description>
         This library is an improved fork of JavaFaker (as well as Ruby's stympy/faker gem and Perl's Data::Faker library)