Bump maven-javadoc-plugin from 3.0.1 to 3.1.1

Bumps [maven-javadoc-plugin](https://github.com/apache/maven-javadoc-plugin) from 3.0.1 to 3.1.1.
- [Release notes](https://github.com/apache/maven-javadoc-plugin/releases)
- [Commits](apache/maven-javadoc-plugin@maven-javadoc-plugin-3.0.1...maven-javadoc-plugin-3.1.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

pom.xml

@@ -20,7 +20,7 @@
     <!-- Build -->
     <maven-compiler-plugin.version>3.8.0</maven-compiler-plugin.version>
     <maven-source-plugin.version>3.0.1</maven-source-plugin.version>
-    <maven-javadoc-plugin.version>3.0.1</maven-javadoc-plugin.version>
+    <maven-javadoc-plugin.version>3.1.1</maven-javadoc-plugin.version>
     <maven-gpg-plugin.version>1.6</maven-gpg-plugin.version>
     <maven-surefire-plugin.version>2.22.1</maven-surefire-plugin.version>
     <maven-failsafe-plugin.version>2.22.1</maven-failsafe-plugin.version>