Bump Microsoft.NET.Test.Sdk from 17.6.2 to 17.6.3 in /src

Bumps [Microsoft.NET.Test.Sdk](https://github.com/microsoft/vstest) from 17.6.2 to 17.6.3.
- [Release notes](https://github.com/microsoft/vstest/releases)
- [Changelog](https://github.com/microsoft/vstest/blob/main/docs/releases.md)
- [Commits](microsoft/vstest@v17.6.2...v17.6.3)

---
updated-dependencies:
- dependency-name: Microsoft.NET.Test.Sdk
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

src/DiffEngine.Tests/DiffEngine.Tests.csproj

@@ -9,7 +9,7 @@
  <ItemGroup>
  <Using Include="DiffEngine" />
  <PackageReference Include="MarkdownSnippets.MsBuild" Version="24.5.1" />
- <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.6.2" />
+ <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.6.3" />
  <PackageReference Include="Argon" Version="0.7.2" />
  <PackageReference Include="Xunit" Version="2.4.2" />
  <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5" PrivateAssets="all" />

src/DiffEngineTray.Tests/DiffEngineTray.Tests.csproj

@@ -6,7 +6,7 @@
  </PropertyGroup>
  <ItemGroup>
  <Using Include="DiffEngine" />
- <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.6.2" />
+ <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.6.3" />
  <PackageReference Include="Argon" Version="0.7.2" />
  <PackageReference Include="Verify.DiffPlex" Version="2.2.1" />
  <PackageReference Include="Verify.WinForms" Version="4.0.0" />