Use IHttpClientFactory in more places

test/Billing.Test/Controllers/FreshsalesControllerTests.cs

@@ -31,12 +31,18 @@ public class FreshsalesControllerTests
         var globalSettings = new GlobalSettings();
         globalSettings.BaseServiceUri.Admin = "https://test.com";
 
+        var httpClientFactory = Substitute.For<IHttpClientFactory>();
+        httpClientFactory
+            .CreateClient("Freshsales")
+            .Returns(new HttpClient());
+
         var sut = new FreshsalesController(
             userRepository,
             organizationRepository,
             billingSettings,
             Substitute.For<ILogger<FreshsalesController>>(),
-            globalSettings
+            globalSettings,
+            httpClientFactory
         );
 
         return (sut, userRepository, organizationRepository);