fix logic for update action into MR and flag never

we set it on 1st place because the more important type of hook than flag approved or not.
Also update action often came with opened state.

Author: YaraslauSupanitski

src/main/java/com/dabsquared/gitlabjenkins/trigger/handler/merge/MergeRequestHookTriggerHandlerFactory.java

@@ -34,12 +34,12 @@ public static MergeRequestHookTriggerHandler newMergeRequestHookTriggerHandler(b
 
         TriggerConfigChain chain = new TriggerConfigChain();
         chain
+            .acceptOnlyIf(triggerOpenMergeRequest != TriggerOpenMergeRequest.never, of(State.opened, State.updated), of(Action.update))
             .acceptOnlyIf(triggerOnApprovedMergeRequest, null, of(Action.approved))
             .acceptIf(triggerOnMergeRequest, of(State.opened, State.reopened), null)
             .acceptIf(triggerOnAcceptedMergeRequest, null, of(Action.merge))
             .acceptIf(triggerOnClosedMergeRequest, null, of(Action.close))
             .acceptIf(triggerOnClosedMergeRequest, of(State.closed), null)
-            .acceptIf(triggerOpenMergeRequest != TriggerOpenMergeRequest.never, of(State.updated), null)
         ;
 
         Set<String> labelsThatForcesBuildIfAddedSet = Stream.of(split(trimToEmpty(labelsThatForcesBuildIfAdded), ",")).collect(toSet());