Bump MSTest from 3.7.2 to 3.7.3

Bumps [MSTest](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
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

CICD.Tools.CatalogUpload.LibTests/CICD.Tools.CatalogUpload.LibTests.csproj

@@ -12,7 +12,7 @@
     <PackageReference Include="Extensions.Logging.Mock" Version="1.2.4" />
     <PackageReference Include="FluentAssertions" Version="7.1.0" />
     <PackageReference Include="Moq" Version="4.20.72" />
-    <PackageReference Include="MSTest" Version="3.7.2" />
+    <PackageReference Include="MSTest" Version="3.7.3" />
     <PackageReference Include="coverlet.collector" Version="6.0.4">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>

CICD.Tools.CatalogUploadTests/CICD.Tools.CatalogUploadTests.csproj

@@ -12,7 +12,7 @@
   <ItemGroup>
     <PackageReference Include="FluentAssertions" Version="7.1.0" />
     <PackageReference Include="Moq" Version="4.20.72" />
-    <PackageReference Include="MSTest" Version="3.7.2" />
+    <PackageReference Include="MSTest" Version="3.7.3" />
     <PackageReference Include="coverlet.collector" Version="6.0.4">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>