Update Specification and other packages to latest version (#582)

* Updating repositories and specification version
Need to fix broken tests

* removing test that would just be testing mocked result now

* Refactored from IAsyncRepository and removed it.
Tests pass.

* Update packages

src/BlazorAdmin/Services/HttpService.cs

@@ -11,7 +11,6 @@ namespace BlazorAdmin.Services
         private readonly HttpClient _httpClient;
         private readonly string _apiUrl;
 
-
         public HttpService(HttpClient httpClient, BaseUrlConfiguration baseUrlConfiguration)
         {
             _httpClient = httpClient;