Merge pull request #1035 from jbonofre/KARAF-6560

[KARAF-6560] Upgrade to maven-javadoc-plugin 3.1.1
diff --git a/pom.xml b/pom.xml
index 0b178c0..0078800 100644
--- a/pom.xml
+++ b/pom.xml
@@ -1844,7 +1844,7 @@
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
                     <artifactId>maven-javadoc-plugin</artifactId>
-                    <version>3.0.1</version>
+                    <version>3.1.1</version>
                 </plugin>
                 <plugin>
                     <groupId>org.apache.maven.plugins</groupId>
@@ -2157,7 +2157,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-javadoc-plugin</artifactId>
-                <version>3.0.1</version>
+                <version>3.1.1</version>
             </plugin>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>