chore(deps): update dependency org.apache.maven.plugins:maven-javadoc-plugin to v3.6.3

Author: renovate-bot

Diff for: google-oauth-client-bom/pom.xml

@@ -102,7 +102,7 @@
       </plugin>
       <plugin>
         <artifactId>maven-javadoc-plugin</artifactId>
-        <version>3.4.1</version>
+        <version>3.6.3</version>
         <configuration>
           <skip>true</skip>
         </configuration>

Diff for: pom.xml

@@ -220,7 +220,7 @@
         <plugin>
           <groupId>org.apache.maven.plugins</groupId>
           <artifactId>maven-javadoc-plugin</artifactId>
-          <version>3.4.1</version>
+          <version>3.6.3</version>
           <executions>
             <execution>
               <id>attach-javadocs</id>
@@ -534,7 +534,7 @@
           <plugin>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-javadoc-plugin</artifactId>
-            <version>3.4.1</version>
+            <version>3.6.3</version>
             <configuration>
               <doclet>com.microsoft.doclet.DocFxDoclet</doclet>
               <useStandardDocletOptions>false</useStandardDocletOptions>