Update dependency NUnit3TestAdapter to v6 (#2751)

Co-authored-by: dependencyupdates[bot] <218638057+dependencyupdates[bot]@users.noreply.github.com>

Author: dependencyupdates[bot]

src/ServicePulse.Host.Tests/ServicePulse.Host.Tests.csproj

@@ -12,7 +12,7 @@
     <PackageReference Include="GitHubActionsTestLogger" Version="3.0.1" />
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
     <PackageReference Include="NUnit" Version="4.4.0" />
-    <PackageReference Include="NUnit3TestAdapter" Version="5.2.0" />
+    <PackageReference Include="NUnit3TestAdapter" Version="6.0.1" />
     <PackageReference Include="Particular.Approvals" Version="1.1.1" />
     <PackageReference Include="System.Text.Json" Version="8.0.5" />
   </ItemGroup>