Bump NUnit3TestAdapter and Microsoft.NETFramework.ReferenceAssemblies (#231)

Author: dependabot[bot]

src/AsyncAwaitBestPractices.UnitTests/AsyncAwaitBestPractices.UnitTests.csproj

@@ -6,7 +6,7 @@
     </PropertyGroup>
     <ItemGroup>
         <PackageReference Include="NUnit" Version="4.3.2" />
-        <PackageReference Include="NUnit3TestAdapter" Version="4.6.0">
+        <PackageReference Include="NUnit3TestAdapter" Version="5.0.0">
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
             <PrivateAssets>all</PrivateAssets>
         </PackageReference>