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

Author: dependabot[bot]

pom.xml

@@ -137,7 +137,7 @@
             <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-sources</id>