Bump NUnit3TestAdapter from 4.6.0 to 5.2.0

---
updated-dependencies:
- dependency-name: NUnit3TestAdapter
  dependency-version: 5.2.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

src/Avalonia.Samples/Testing/TestableApp.Headless.NUnit/TestableApp.Headless.NUnit.csproj

@@ -13,7 +13,7 @@
     <PackageReference Include="Avalonia.Headless.NUnit" Version="11.3.8" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageReference Include="NUnit" Version="4.4.0" />
-    <PackageReference Include="NUnit3TestAdapter" Version="4.6.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="5.2.0" />
     <PackageReference Include="NUnit.Analyzers" Version="4.6.0" />
     <PackageReference Include="coverlet.collector" Version="6.0.3" />
   </ItemGroup>