Update to MSAL 4.7.1 (#87)

Author: jmprieur

WebApp-OpenIDConnect-DotNet/WebApp-OpenIDConnect-DotNet.csproj

@@ -1,10 +1,10 @@
-<Project Sdk="Microsoft.NET.Sdk.Web">
+<Project Sdk="Microsoft.NET.Sdk.Web">
   <PropertyGroup>
     <TargetFramework>netcoreapp2.2</TargetFramework>
     <RootNamespace>WebApp_OpenIDConnect_DotNet</RootNamespace>
   </PropertyGroup>
   <ItemGroup>
-    <PackageReference Include="Microsoft.Identity.Client" Version="4.6.0" />
+    <PackageReference Include="Microsoft.Identity.Client" Version="4.7.1" />
     <PackageReference Include="Microsoft.AspNetCore" Version="2.2.0" />
     <PackageReference Include="Microsoft.AspNetCore.Authentication.Cookies" Version="2.2.0" />
     <PackageReference Include="Microsoft.AspNetCore.Authentication.OpenIdConnect" Version="2.2.0" />