fix: bad key was letting only the last cube getting stored

mr_center.py

@@ -44,7 +44,7 @@ for cube in all_cubes:
         merge_request["pipeline"] = pipelines[0] if pipelines else None
         merge_requests.append(merge_request)
 
-    context["cubes"][project.name] = {
+    context["cubes"][cube.name] = {
         "cube": cube.attributes,
         "merge_requests": merge_requests,
         "labels": {x.name: x.attributes for x in project.labels.list(all=True)}