Indicate 3.1.4 is the latest in README.md

Author: pettermahlen

README.md

@@ -69,7 +69,7 @@ To include the latest released version in your maven project, do:
   <dependency>
     <groupId>com.spotify</groupId>
     <artifactId>dns</artifactId>
-    <version>3.1.2</version>
+    <version>3.1.4</version>
   </dependency>
 ```