Bump MSTest.TestAdapter from 3.0.1 to 3.7.3

Bumps [MSTest.TestAdapter](https://github.com/microsoft/testfx) from 3.0.1 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@v3.0.1...v3.7.3)

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

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

Directory.Build.props

@@ -78,7 +78,7 @@
             <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
         </PackageReference>
 
-        <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1" PrivateAssets="All" />
+        <PackageReference Include="Microsoft.SourceLink.GitHub" Version="8.0.0" PrivateAssets="All" />
     </ItemGroup>
 
     <ItemGroup>

test/UnitTest/UnitTest.csproj

@@ -9,7 +9,7 @@
     <ItemGroup>
         <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.1" />
         <PackageReference Include="Moq" Version="4.18.3" />
-        <PackageReference Include="MSTest.TestAdapter" Version="3.0.1" />
+        <PackageReference Include="MSTest.TestAdapter" Version="3.7.3" />
         <PackageReference Include="MSTest.TestFramework" Version="3.0.1" />
         <PackageReference Include="xunit" Version="2.4.2" />
         <PackageReference Include="FluentAssertions" Version="6.8.0" />