Bump org.apache.maven.plugins:maven-javadoc-plugin from 3.5.0 to 3.6.3

Bumps [org.apache.maven.plugins:maven-javadoc-plugin](https://github.com/apache/maven-javadoc-plugin) from 3.5.0 to 3.6.3.
- [Release notes](https://github.com/apache/maven-javadoc-plugin/releases)
- [Commits](https://github.com/apache/maven-javadoc-plugin/compare/maven-javadoc-plugin-3.5.0...maven-javadoc-plugin-3.6.3)

---
updated-dependencies:
- dependency-name: org.apache.maven.plugins:maven-javadoc-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/pom.xml b/pom.xml
index 99f2554..56d8791 100644
--- a/pom.xml
+++ b/pom.xml
@@ -122,7 +122,7 @@
                  <plugin>
                      <groupId>org.apache.maven.plugins</groupId>
                      <artifactId>maven-javadoc-plugin</artifactId>
-                     <version>3.5.0</version>
+                     <version>3.6.3</version>
                      <configuration>
                          <attach>true</attach>
                          <source>1.6</source>