chore: Fixed test projects package dependencies

Author: gigi81

tests/Directory.Build.props

@@ -6,9 +6,11 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="NUnit" Version="3.13.2" />
+    <PackageReference Include="NUnit3TestAdapter" Version="4.0.0" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.7.1" />
-    <PackageReference Include="xunit" Version="2.4.1" />
-    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.3" />
     <PackageReference Include="coverlet.collector" Version="1.3.0" />
+    <PackageReference Include="GitHubActionsTestLogger" Version="1.1.2" />
+    <PackageReference Include="Snapshooter.NUnit" Version="0.5.8" />
   </ItemGroup>
 </Project>

tests/System.IO.Abstractions.Extensions.Tests/System.IO.Abstractions.Extensions.Tests.csproj

@@ -7,12 +7,6 @@
     <IsTestable>true</IsTestable>
   </PropertyGroup>
 
-  <ItemGroup>
-    <PackageReference Include="NUnit" Version="3.13.2" />
-    <PackageReference Include="NUnit3TestAdapter" Version="4.0.0" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="16.5.0" />
-  </ItemGroup>
-
   <ItemGroup>
     <ProjectReference Include="..\..\src\System.IO.Abstractions.Extensions\System.IO.Abstractions.Extensions.csproj" />
   </ItemGroup>