Upgrade frontend-maven-plugin from 1.3 to 1.4

pom.xml

@@ -111,7 +111,7 @@
         <plugin>
           <groupId>com.github.eirslett</groupId>
           <artifactId>frontend-maven-plugin</artifactId>
-          <version>1.3</version>
+          <version>1.4</version>
         </plugin>
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>