Update JSON in integration test for polymorphism

The JSON data file used in the integration tests for serialization polymorphism has been updated. Specifically, the namespace for CustomDictionary in the type metadata section has been changed to match with its current location.

test/integration/Elsa.Workflows.IntegrationTests/Serialization/Polymorphism/data.json

@@ -1 +1 @@
-{"$id":"1","text":"Hello World","number":123,"flag":true,"items":{"$id":"2","$values":[{"$id":"3","text":"Hello","number":1,"flag":true,"items":{"$id":"4","$values":[{"$id":"5","number":0,"flag":false,"metadata":{"Foo":"Bar","Number":123,"Flag":true,"Models":{"$id":"6","$values":[{"$id":"7","text":"Hello","number":1,"flag":true,"metadata":{"Foo":"Bar","Number":123,"Flag":true,"Models":{"$ref":"6"},"CustomDictionary":{"$id":"8","content-type":["application/json"],"_type":"Elsa.IntegrationTests.Serialization.Polymorphism.CustomDictionary, Elsa.IntegrationTests"}}},{"$id":"9","text":"World","number":2,"flag":false}],"_type":"System.Collections.Generic.List\u00601[[Elsa.IntegrationTests.Serialization.Polymorphism.Model, Elsa.IntegrationTests]], System.Private.CoreLib"},"CustomDictionary":{"$ref":"8"}}}]}},{"$id":"10","text":"World","number":2,"flag":false}]},"metadata":{"Foo":"Bar","Number":123,"Flag":true,"Models":{"$ref":"6"},"CustomDictionary":{"$ref":"8"}},"payload":{"$id":"11","text":"Payload","number":0,"flag":false,"_type":"Elsa.IntegrationTests.Serialization.Polymorphism.Model, Elsa.IntegrationTests"},"hashSet":{"$id":"12","$values":[{"$id":"13","text":"I\u0027m a model in a set!","number":0,"flag":false}],"_type":"System.Collections.Generic.HashSet\u00601[[Elsa.IntegrationTests.Serialization.Polymorphism.Model, Elsa.IntegrationTests]], System.Private.CoreLib"},"properties":{"$id":"14","Hello":{"$id":"15","text":"Hello","number":1,"flag":true},"World":{"$id":"16","text":"World","number":2,"flag":false}}}
+{"$id":"1","text":"Hello World","number":123,"flag":true,"items":{"$id":"2","$values":[{"$id":"3","text":"Hello","number":1,"flag":true,"items":{"$id":"4","$values":[{"$id":"5","number":0,"flag":false,"metadata":{"Foo":"Bar","Number":123,"Flag":true,"Models":{"$id":"6","$values":[{"$id":"7","text":"Hello","number":1,"flag":true,"metadata":{"Foo":"Bar","Number":123,"Flag":true,"Models":{"$ref":"6"},"CustomDictionary":{"$id":"8","content-type":["application/json"],"_type":"Elsa.Workflows.IntegrationTests.Serialization.Polymorphism.CustomDictionary, Elsa.Workflows.IntegrationTests"}}},{"$id":"9","text":"World","number":2,"flag":false}],"_type":"System.Collections.Generic.List\u00601[[Elsa.Workflows.IntegrationTests.Serialization.Polymorphism.Model, Elsa.Workflows.IntegrationTests]], System.Private.CoreLib"},"CustomDictionary":{"$ref":"8"}}}]}},{"$id":"10","text":"World","number":2,"flag":false}]},"metadata":{"Foo":"Bar","Number":123,"Flag":true,"Models":{"$ref":"6"},"CustomDictionary":{"$ref":"8"}},"payload":{"$id":"11","text":"Payload","number":0,"flag":false,"_type":"Elsa.Workflows.IntegrationTests.Serialization.Polymorphism.Model, Elsa.Workflows.IntegrationTests"},"hashSet":{"$id":"12","$values":[{"$id":"13","text":"I\u0027m a model in a set!","number":0,"flag":false}],"_type":"System.Collections.Generic.HashSet\u00601[[Elsa.Workflows.IntegrationTests.Serialization.Polymorphism.Model, Elsa.Workflows.IntegrationTests]], System.Private.CoreLib"},"properties":{"$id":"14","Hello":{"$id":"15","text":"Hello","number":1,"flag":true},"World":{"$id":"16","text":"World","number":2,"flag":false}}}