Update Directory.Build.targets

Author: JimBobSquarePants

tests/Directory.Build.targets

@@ -31,7 +31,7 @@
     <PackageReference Update="coverlet.collector" Version="1.3.1-preview.27.gdd2237a3be" PrivateAssets="All"/>
     <PackageReference Update="Magick.NET-Q16-AnyCPU" Version="7.15.5" />
     <PackageReference Update="Microsoft.DotNet.RemoteExecutor" Version="5.0.0-beta.20069.1" />
-    <PackageReference Update="Microsoft.NET.Test.Sdk" Version="16.7.1" />
+    <PackageReference Update="Microsoft.NET.Test.Sdk" Version="16.5.0" />
     <PackageReference Update="Moq" Version="4.14.5" />
     <PackageReference Update="Pfim" Version="0.9.1" />
     <PackageReference Update="SharpZipLib" Version="1.2.0" />