Update dependency org.apache.maven.plugins:maven-javadoc-plugin to v3 (#23)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

pom.xml

@@ -111,7 +111,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-javadoc-plugin</artifactId>
-                <version>2.10.4</version>
+                <version>3.12.0</version>
                 <configuration>
                     <charset>UTF-8</charset>
                     <encoding>UTF-8</encoding>