Bump TUnit from 1.5.70 to 1.6.5

---
updated-dependencies:
- dependency-name: TUnit
  dependency-version: 1.6.5
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Directory.Packages.props

@@ -70,7 +70,7 @@
     <PackageVersion Include="TestHost.Abstracts" Version="2.0.0" />
     <PackageVersion Include="Testcontainers.MongoDb" Version="4.9.0" />
     <PackageVersion Include="Testcontainers.MsSql" Version="4.9.0" />
-    <PackageVersion Include="TUnit" Version="1.5.70" />
+    <PackageVersion Include="TUnit" Version="1.6.5" />
     <PackageVersion Include="Twilio" Version="7.14.0" />
     <PackageVersion Include="Verify.TUnit" Version="31.9.0" />
     <PackageVersion Include="YamlDotNet" Version="16.3.0" />