Chore(deps): Bump the tunit group with 1 update (#125)

Bumps TUnit from 1.66.27 to 1.68.4

---
updated-dependencies:
- dependency-name: TUnit
  dependency-version: 1.68.4
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: tunit
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Directory.Packages.props

@@ -33,7 +33,7 @@
     <PackageVersion Include="Serilog.AspNetCore" Version="10.0.0" />
     <PackageVersion Include="Serilog.Sinks.Async" Version="2.1.0" />
     <PackageVersion Include="Serilog.Sinks.Console" Version="6.1.1" />
-    <PackageVersion Include="TUnit" Version="1.66.27" />
+    <PackageVersion Include="TUnit" Version="1.68.4" />
     <PackageVersion Include="coverlet.collector" Version="10.0.1" />
     <PackageVersion Include="Microsoft.CodeAnalysis.Analyzers" Version="5.9.0" />
     <PackageVersion Include="Microsoft.CodeAnalysis.CSharp" Version="5.9.0" />