Update hibernate validator to latest version

Author: adrienlauer

pom.xml

@@ -34,7 +34,7 @@
         <shiro.version>1.4.0</shiro.version>
         <undertow.version>2.0.17.Final</undertow.version>
         <jersey2.version>2.30</jersey2.version>
-        <hibernate-validator.version>5.4.3.Final</hibernate-validator.version>
+        <hibernate-validator.version>6.1.5.Final</hibernate-validator.version>
         <aopalliance.version>1.0</aopalliance.version>
         <glassfish-javax.el.version>3.0.0</glassfish-javax.el.version>
         <arquillian.version>1.4.0.Final</arquillian.version>

specs/src/main/java/org/seedstack/seed/LifecycleListener.java

@@ -11,11 +11,12 @@
 /**
  * Any class implementing this interface will be registered as an application lifecycle listener. As the application
  * starts and stops, these callbacks will be invoked to allow for executing startup and/or shutdown code.
- * LifecycleListeners are singletons and injected.
+ * <p>LifecycleListeners are singletons, meaning that the same instance will be used for all method invocations. You can
+ * use injection and interception at all phases.</p>
  */
 public interface LifecycleListener {
     /**
-     * This method is called by SeedStack just after the application has initialized but is not started yet.
+     * This method is called by SeedStack just before the application is starting.
      */
     default void starting() {
         // no-op
@@ -29,7 +30,7 @@ default void started() {
     }
 
     /**
-     * This method is called by SeedStack just before the application is shut down.
+     * This method is called by SeedStack just before the application is shutting down.
      */
     default void stopping() {
         // no-op