Merge pull request #32 from Stravaig-Projects/dependabot/nuget/Microsoft.NET.Test.Sdk-16.9.1

Bump Microsoft.NET.Test.Sdk from 16.8.3 to 16.9.1

Author: colinangusmackay

src/Stravaig.ShortCode.Tests/Stravaig.ShortCode.Tests.csproj

@@ -5,7 +5,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-      <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.8.3" />
+      <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.9.1" />
       <PackageReference Include="Moq" Version="4.16.0" />
       <PackageReference Include="NUnit" Version="3.13.1" />
       <PackageReference Include="NUnit3TestAdapter" Version="3.17.0" />