Upgrade maven-javadoc-plugin 3.4.0 -> 3.4.1 (#195)

See:
- https://github.com/apache/maven-javadoc-plugin/releases/tag/maven-javadoc-plugin-3.4.1
- apache/maven-javadoc-plugin@maven-javadoc-plugin-3.4.0...maven-javadoc-plugin-3.4.1

pom.xml

@@ -982,7 +982,7 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-javadoc-plugin</artifactId>
-                    <version>3.4.0</version>
+                    <version>3.4.1</version>
                     <configuration>
                         <!-- All relevant doclint checks are performed during
                         the compilation phase; no need to recheck during