Update Directory.Packages.props

Author: SimonCropp

src/Directory.Packages.props

@@ -11,7 +11,7 @@
     <PackageVersion Include="Serilog" Version="4.3.1" />
     <PackageVersion Include="Serilog.Sinks.Console" Version="6.1.1" />
     <PackageVersion Include="Serilog.Sinks.File" Version="7.0.0" />
-    <PackageVersion Include="TUnit" Version="1.19.74" />
+    <PackageVersion Include="TUnit" Version="1.21.6" />
     <PackageVersion Include="Verify.TUnit" Version="31.13.5" />
     <PackageVersion Include="Microsoft.Sbom.Targets" Version="4.1.5" />
     <PackageVersion Include="Argon" Version="0.33.5" />