Bump MSTest.TestFramework from 3.3.1 to 3.5.1 in /tests

Bumps [MSTest.TestFramework](https://github.com/microsoft/testfx) from 3.3.1 to 3.5.1.
- [Release notes](https://github.com/microsoft/testfx/releases)
- [Changelog](https://github.com/microsoft/testfx/blob/main/docs/Changelog.md)
- [Commits](microsoft/testfx@v3.3.1...v3.5.1)

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

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

tests/Wave.Tests.vbproj

@@ -136,7 +136,7 @@
       <Version>3.5.1</Version>
     </PackageReference>
     <PackageReference Include="MSTest.TestFramework">
-      <Version>3.3.1</Version>
+      <Version>3.5.1</Version>
     </PackageReference>
   </ItemGroup>
   <ItemGroup>