Bump the nuget-packages group with 2 updates

Bumps TUnit from 1.19.74 to 1.21.6
Bumps Verify.TUnit from 31.13.4 to 31.13.5

---
updated-dependencies:
- dependency-name: TUnit
  dependency-version: 1.21.6
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: nuget-packages
- dependency-name: Verify.TUnit
  dependency-version: 31.13.5
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: nuget-packages
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Directory.Packages.props

@@ -29,9 +29,9 @@
     <PackageVersion Include="Microsoft.Extensions.Logging.Abstractions" Version="10.0.5" />
     <PackageVersion Include="Nerdbank.GitVersioning" Version="3.9.50" />
     <PackageVersion Include="System.Text.Json" Version="9.0.9" />
-    <PackageVersion Include="TUnit" Version="1.19.74" />
+    <PackageVersion Include="TUnit" Version="1.21.6" />
     <PackageVersion Include="Verify.SourceGenerators" Version="2.5.0" />
-    <PackageVersion Include="Verify.TUnit" Version="31.13.4" />
+    <PackageVersion Include="Verify.TUnit" Version="31.13.5" />
     <PackageVersion Include="Vortice.Dxc" Version="3.8.3" />
     <PackageVersion Include="Vortice.Mathematics" Version="2.1.0" />
     <PackageVersion Include="Vortice.D3DCompiler" Version="3.8.3" />