chore: update package versions and refactor TransactionBehavior

- Upgrade EF Core packages to 10.0.x and HrynCo.DAL.Abstract to 1.0.10
- Refactor TransactionBehavior to simplify transaction handling logic

HrynCo.NotificationService.Services/Behaviors/TransactionBehavior.cs

@@ -18,11 +18,15 @@ public class TransactionBehavior<TRequest, TResponse> : IPipelineBehavior<TReque
 
     public Task<TResponse> Handle(TRequest request, RequestHandlerDelegate<TResponse> next, CancellationToken cancellationToken) =>
         _profiler.MeasureExecutionAsync(
-            () => _unitOfWork.ExecuteInTransactionAsync(async () =>
+            async () =>
             {
-                TResponse response = await next();
-                await _unitOfWork.SaveChangesAsync(cancellationToken);
-                return response;
-            }),
+                TResponse? response = default;
+                await _unitOfWork.ExecuteInTransactionAsync(async () =>
+                {
+                    response = await next();
+                });
+
+                return response!;
+            },
             typeof(TRequest).Name);
-}
+}