Update dependency org.apache.maven.plugins:maven-javadoc-plugin to v3

Author: renovate[bot]

pom.xml

@@ -185,7 +185,7 @@
                     <plugin>
                         <groupId>org.apache.maven.plugins</groupId>
                         <artifactId>maven-javadoc-plugin</artifactId>
-                        <version>2.9.1</version>
+                        <version>3.12.0</version>
                         <executions>
                             <execution>
                                 <id>attach-javadocs</id>