Bump MSTest.TestFramework from 3.7.2 to 3.7.3

Bumps [MSTest.TestFramework](https://github.com/microsoft/testfx) from 3.7.2 to 3.7.3.
- [Release notes](https://github.com/microsoft/testfx/releases)
- [Changelog](https://github.com/microsoft/testfx/blob/main/docs/Changelog.md)
- [Commits](microsoft/testfx@v3.7.2...v3.7.3)

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

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

ExceptionMiddleware/ExceptionMiddleware.Test.csproj

@@ -13,7 +13,7 @@
     </PackageReference>
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageReference Include="Microsoft.OData.Edm" Version="8.2.3" />
-    <PackageReference Include="MSTest.TestFramework" Version="3.7.2" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.7.3" />
     <PackageReference Include="Microsoft.VisualStudio.Threading.Analyzers" Version="17.12.19">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>