Merge branch 'master' into dependabot/maven/io.netty-netty-example-4.1.112.Final

Author: chrjohn

pom.xml

@@ -78,7 +78,7 @@
 		<maven-surefire-plugin-version>3.3.1</maven-surefire-plugin-version>
 		<maven-pmd-plugin-version>3.24.0</maven-pmd-plugin-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-shade-plugin-version>3.6.0</maven-shade-plugin-version>
 		<maven-assembly-plugin-version>3.7.1</maven-assembly-plugin-version>
 		<maven-bundle-plugin-version>5.1.9</maven-bundle-plugin-version>