Update dependency MediatR to 12.4.1

Author: renovate[bot]

src/Sample-CleanArchitecture-CQRS.Application/Sample-CleanArchitecture-CQRS.Application.csproj

@@ -11,7 +11,7 @@
       <PackageReference Include="FluentValidation.AspNetCore" Version="11.3.0" />
       <PackageReference Include="FluentValidation.DependencyInjectionExtensions" Version="11.9.0" />
       <PackageReference Include="Mapster" Version="7.4.0" />
-      <PackageReference Include="MediatR" Version="12.2.0" />
+      <PackageReference Include="MediatR" Version="12.4.1" />
       <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="8.0.0" />
     </ItemGroup>