Update dependency NUnit3TestAdapter to 6.3.1

Author: dependencyupdates[bot]

src/Directory.Packages.props

@@ -63,7 +63,7 @@
     <PackageVersion Include="NuGet.Versioning" Version="7.9.0" />
     <PackageVersion Include="NUnit" Version="4.6.1" />
     <PackageVersion Include="NUnit.Analyzers" Version="4.15.0" />
-    <PackageVersion Include="NUnit3TestAdapter" Version="6.3.0" />
+    <PackageVersion Include="NUnit3TestAdapter" Version="6.3.1" />
     <PackageVersion Include="OpenTelemetry.Exporter.Console" Version="1.18.0" />
     <PackageVersion Include="OpenTelemetry.Exporter.OpenTelemetryProtocol" Version="1.18.0" />
     <PackageVersion Include="OpenTelemetry.Extensions.Hosting" Version="1.18.0" />