Update dependency org.apache.maven.plugins:maven-javadoc-plugin to v3.8.0 (#186)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

pom.xml

@@ -63,7 +63,7 @@
              Scalafix.classloaderInstance() call -->
         <java.version>8</java.version>
         <maven-source-plugin.version>3.3.1</maven-source-plugin.version>
-        <maven-javadoc-plugin.version>3.7.0</maven-javadoc-plugin.version>
+        <maven-javadoc-plugin.version>3.8.0</maven-javadoc-plugin.version>
         <maven-gpg-plugin.version>3.2.4</maven-gpg-plugin.version>
         <nexus-staging-maven-plugin.version>1.7.0</nexus-staging-maven-plugin.version>
         <scalatest.version>3.2.19</scalatest.version>