Upgrade org.apache.maven.plugins:maven-javadoc-plugin from 3.5.0 to 3.6.3 (#1282)

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
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

amazon-kinesis-client-multilang/pom.xml

@@ -143,7 +143,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-javadoc-plugin</artifactId>
-        <version>3.5.0</version>
+        <version>3.6.3</version>
         <executions>
           <execution>
             <id>attach-javadocs</id>

amazon-kinesis-client/pom.xml

@@ -306,7 +306,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-javadoc-plugin</artifactId>
-        <version>3.5.0</version>
+        <version>3.6.3</version>
         <configuration>
           <excludePackageNames>com.amazonaws.services.kinesis.producer.protobuf</excludePackageNames>
         </configuration>