Merge pull request #5374 from eXist-db/dependabot/maven/org.apache.maven.plugins-maven-javadoc-plugin-3.8.0

Bump org.apache.maven.plugins:maven-javadoc-plugin from 3.7.0 to 3.8.0

Author: dizzzz

exist-parent/pom.xml

@@ -747,7 +747,7 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-javadoc-plugin</artifactId>
-                    <version>3.7.0</version>
+                    <version>3.8.0</version>
                     <configuration>
                         <source>${project.build.source}</source>
                         <archive>