- Update Karaf to latest stable version (4.2.4)

- Add description to hello field.

Author: sergehuber

examples/osgi/pom.xml

@@ -10,7 +10,7 @@
     <packaging>pom</packaging>
 
     <properties>
-        <karaf.version>4.1.6</karaf.version>
+        <karaf.version>4.2.4</karaf.version>
         <graphql.java.servlet.version>7.3.4-SNAPSHOT</graphql.java.servlet.version>
         <graphql.java.version>11.0</graphql.java.version>
     </properties>

examples/osgi/providers/src/main/java/graphql/servlet/examples/osgi/ExampleGraphQLProvider.java

@@ -25,6 +25,7 @@ public Collection<GraphQLFieldDefinition> getQueries() {
         fieldDefinitions.add(newFieldDefinition()
                 .type(GraphQLString)
                 .name("hello")
+                .description("Basic example of a GraphQL Java Servlet provider using the Apache Karaf OSGi Runtime")
                 .staticValue("world")
                 .build());
         return fieldDefinitions;