Minor test project.csproj updates

Author: Jac21

BlockingCollectionsExtensions.Unit.Tests/BlockingCollectionsExtensions.Unit.Tests.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <TargetFramework>netcoreapp3.1</TargetFramework>
@@ -7,13 +7,13 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="nunit" Version="3.12.0" />
-    <PackageReference Include="NUnit3TestAdapter" Version="3.16.1">
+    <PackageReference Include="nunit" Version="3.13.2" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.1.0">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
     </PackageReference>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.4.0" />
-    <PackageReference Include="Shouldly" Version="3.0.2" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.0.0" />
+    <PackageReference Include="Shouldly" Version="4.0.3" />
   </ItemGroup>
 
   <ItemGroup>