Upgrade to Maven Javadoc Plugin 3.0.0

Closes gh-12345

spring-boot-project/spring-boot-dependencies/pom.xml

@@ -197,7 +197,7 @@
 		<maven-invoker-plugin.version>3.0.0</maven-invoker-plugin.version>
 		<maven-help-plugin.version>2.2</maven-help-plugin.version>
 		<maven-jar-plugin.version>3.0.2</maven-jar-plugin.version>
-		<maven-javadoc-plugin.version>3.0.0-M1</maven-javadoc-plugin.version>
+		<maven-javadoc-plugin.version>3.0.0</maven-javadoc-plugin.version>
 		<maven-resources-plugin.version>3.0.1</maven-resources-plugin.version>
 		<maven-shade-plugin.version>2.4.3</maven-shade-plugin.version>
 		<maven-site-plugin.version>3.6</maven-site-plugin.version>