deps: Bump MSTest.TestFramework from 3.6.1 to 4.2.3

---
updated-dependencies:
- dependency-name: MSTest.TestFramework
  dependency-version: 4.2.3
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

GI-Test/GI-Test.csproj

@@ -56,7 +56,7 @@
          Adds IsTestProject=true implicitly. -->
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
     <PackageReference Include="MSTest.TestAdapter" Version="3.6.1" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.6.1" />
+    <PackageReference Include="MSTest.TestFramework" Version="4.2.3" />
     <PackageReference Include="Newtonsoft.Json" Version="13.0.4" />
     <PackageReference Include="OpenCvSharp4" Version="4.13.0.20260330" />
     <PackageReference Include="OpenCvSharp4.Extensions" Version="4.13.0.20260330" />