Update Directory.Packages.props

Author: SimonCropp

src/Directory.Packages.props

@@ -11,7 +11,7 @@
     <PackageVersion Include="Microsoft.Net.Http.Headers" Version="10.0.5" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.3.0" />
     <PackageVersion Include="NUnit" Version="4.5.1" />
-    <PackageVersion Include="NUnit3TestAdapter" Version="5.2.0" Pinned="true" />
+    <PackageVersion Include="NUnit3TestAdapter" Version="6.2.0" />
     <PackageVersion Include="ProjectDefaults" Version="1.0.172" />
     <PackageVersion Include="Polyfill" Version="9.22.0" />
     <PackageVersion Include="ProjectFiles" Version="1.1.1" />