build: execute resources after vaadin maven plugin

Author: mlopezFC

pom.xml

@@ -179,6 +179,10 @@
                     </execution>
                 </executions>
             </plugin>
+            <plugin>
+                <artifactId>maven-resources-plugin</artifactId>
+                <version>3.2.0</version>
+            </plugin>
             <plugin>
                 <groupId>org.eclipse.jetty</groupId>
                 <artifactId>jetty-maven-plugin</artifactId>