chore: Upgrade von Core.Abstractions 2.2.1 und Core.Client auf 2.0.2

EnvelopeGenerator.Web/Controllers/Test/TestMessagingController.cs

@@ -17,8 +17,8 @@ namespace EnvelopeGenerator.Web.Controllers.Test
         [HttpPost]
         public async Task<IActionResult> SendAsync(string recipient, string message)
         {
-            await _service.SendSmsAsync(recipient: recipient, message: message);
-            return Ok();
+            var res = await _service.SendSmsAsync(recipient: recipient, message: message);
+            return res is null? StatusCode(StatusCodes.Status500InternalServerError) : Ok(res);
         }
     }
 }