Bump the dev-dependencies group across 1 directory with 2 updates

Bumps the dev-dependencies group with 2 updates in the / directory: [MSTest.TestAdapter](https://github.com/microsoft/testfx) and [MSTest.TestFramework](https://github.com/microsoft/testfx).


Updates `MSTest.TestAdapter` from 3.6.3 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@v3.6.3...v3.7.3)

Updates `MSTest.TestFramework` from 3.6.3 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@v3.6.3...v3.7.3)

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

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

Author: dependabot[bot]

ExportImportTests/ExportImportTests.csproj

@@ -8,8 +8,8 @@
 	<ItemGroup>
 		<PackageReference Include="FluentAssertions" Version="5.10.3" />
 		<PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
-		<PackageReference Include="MSTest.TestAdapter" Version="3.6.3" />
-		<PackageReference Include="MSTest.TestFramework" Version="3.6.3" />
+		<PackageReference Include="MSTest.TestAdapter" Version="3.7.3" />
+		<PackageReference Include="MSTest.TestFramework" Version="3.7.3" />
 		<PackageReference Include="coverlet.collector" Version="6.0.2" />
 	</ItemGroup>