Bump org.apache.maven.plugins:maven-javadoc-plugin in /Java

Bumps [org.apache.maven.plugins:maven-javadoc-plugin](https://github.com/apache/maven-javadoc-plugin) from 3.7.0 to 3.8.0.
- [Release notes](https://github.com/apache/maven-javadoc-plugin/releases)
- [Commits](apache/maven-javadoc-plugin@maven-javadoc-plugin-3.7.0...maven-javadoc-plugin-3.8.0)

---
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>

Java/pom.xml

@@ -102,7 +102,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-javadoc-plugin</artifactId>
-        <version>3.7.0</version>
+        <version>3.8.0</version>
         <executions>
           <execution>
             <id>attach-javadocs</id>
@@ -156,7 +156,7 @@
           <plugin>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-javadoc-plugin</artifactId>
-            <version>3.7.0</version>
+            <version>3.8.0</version>
             <executions>
               <execution>
                 <id>attach-javadocs</id>