chore(deps): update tunit packages to 1.28.7

Author: renovate[bot]

Directory.Packages.props

@@ -23,8 +23,8 @@
     <PackageVersion Include="NetEvolve.Arguments" Version="3.2.110" />
     <PackageVersion Include="NetEvolve.Extensions.TUnit" Version="3.5.238" />
     <PackageVersion Include="NetEvolve.Extensions.XUnit.V3" Version="3.5.238" />
-    <PackageVersion Include="TUnit" Version="1.28.0" />
-    <PackageVersion Include="TUnit.Core" Version="1.28.0" />
+    <PackageVersion Include="TUnit" Version="1.28.7" />
+    <PackageVersion Include="TUnit.Core" Version="1.28.7" />
     <PackageVersion Include="Verify.ParametersHashing" Version="1.0.0" />
     <PackageVersion Include="Verify.TUnit" Version="31.15.0" />
     <PackageVersion Include="Verify.XunitV3" Version="31.13.5" />