chore(deps): update dependency chickensoft.godottest to 2.0.28 (#118)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Chickensoft.Serialization.Godot.Tests/Chickensoft.Serialization.Godot.Tests.csproj

@@ -17,7 +17,7 @@
   </PropertyGroup>
   <ItemGroup>
     <!-- Test executor. -->
-    <PackageReference Include="Chickensoft.GoDotTest" Version="2.0.27" />
+    <PackageReference Include="Chickensoft.GoDotTest" Version="2.0.28" />
     <!-- Assertions library. -->
     <PackageReference Include="Shouldly" Version="4.3.0" />
     <!-- Generated mocks. -->