Updated AspNetCore.App version in Tests folder.

Author: priyaananthasankar

web/src/signalr-web/SignalRMiddleware/SignalRMiddlewareTests/SignalRMiddlewareTests.csproj

@@ -7,7 +7,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.1.0" />
+    <PackageReference Include="Microsoft.AspNetCore.App" Version="2.1.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.7.0" />
     <PackageReference Include="Moq" Version="4.8.2" />
     <PackageReference Include="xunit" Version="2.3.1" />