[jvm-packages] Update dependencies. (#9809)

- scalatest: 3.2.17
- maven-checkstyle-plugin: 3.3.1
- maven-surefire-plugin: 3.2.2
- maven-project-info-reports-plugin: 3.5.0
- maven-javadoc-plugin: 3.6.2

jvm-packages/xgboost4j-gpu/pom.xml

@@ -72,7 +72,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-javadoc-plugin</artifactId>
-                <version>3.5.0</version>
+                <version>3.6.2</version>
                 <configuration>
                     <show>protected</show>
                     <nohelp>true</nohelp>