Release 4.9.0 (#470)

- Knet updates, refactor and custom response

Author: armando-rodriguez-cko

Directory.Build.props

@@ -1,5 +1,5 @@
 <Project>
     <PropertyGroup>
-        <Version>4.8.1</Version>
+        <Version>4.9.0</Version>
     </PropertyGroup>
 </Project>

test/CheckoutSdkTest/Metadata/MetadataIntegrationTest.cs

@@ -25,7 +25,18 @@ private async Task ShouldRequestCardMetadataForCardNumber()
                 Source = new CardMetadataCardSource { Number = CardNumberConstant },
                 Format = CardMetadataFormatType.Basic
             };
-            await MakeCardMetadataRequest(request);
+            CardMetadataResponse response = await DefaultApi.MetadataClient().RequestCardMetadata(request);
+
+            response.ShouldNotBeNull();
+            response.Bin.ShouldBe(TestCardSource.Visa.Number[..11]);
+            response.Scheme.ShouldNotBeNull();
+            response.CardType.ShouldBeOfType<CardMetadataType>();
+            response.CardCategory.ShouldBeOfType<CardCategory>();
+            response.IssuerCountry.ShouldBeOfType<CountryCode>();
+            response.IssuerCountryName.ShouldNotBeNull();
+            response.ProductId.ShouldNotBeNull();
+            response.ProductType.ShouldNotBeNull();
+            response.HttpStatusCode.ShouldBe(200);
         }
 
         [Fact(Skip = "unavailable")]