build: upgrade javadoc plugin to 3.11.1

Author: javier-godoy

pom.xml

@@ -235,8 +235,8 @@
         <plugin>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-javadoc-plugin</artifactId>
-            <version>3.0.1</version>
-            <executions>
+            <version>3.11.1</version>
+             <executions>
                 <execution>
                     <id>attach-javadocs</id>
                     <phase>package</phase>
@@ -247,7 +247,11 @@
             </executions>
             <configuration>
                 <quiet>true</quiet>
-                <additionalJOption>-Xdoclint:none</additionalJOption>
+                <doclint>none</doclint>
+                <failOnWarnings>true</failOnWarnings>
+                <links>
+                    <link>https://javadoc.io/doc/com.vaadin/vaadin-platform-javadoc/${vaadin.version}</link>
+                </links>
             </configuration>
         </plugin>
     </plugins>