Bump coverlet.collector

Bumps the dotnet group in /docs/core/testing/snippets/order-unit-tests/csharp/MSTest.Project with 1 update: [coverlet.collector](https://github.com/coverlet-coverage/coverlet).


Updates `coverlet.collector` from 6.0.2 to 6.0.3
- [Release notes](https://github.com/coverlet-coverage/coverlet/releases)
- [Commits](coverlet-coverage/coverlet@v6.0.2...v6.0.3)

---
updated-dependencies:
- dependency-name: coverlet.collector
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: dotnet
...

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

docs/core/testing/snippets/order-unit-tests/csharp/MSTest.Project/MSTest.Project.csproj

@@ -11,7 +11,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
     <PackageReference Include="MSTest.TestAdapter" Version="3.7.0" />
     <PackageReference Include="MSTest.TestFramework" Version="3.7.0" />
-    <PackageReference Include="coverlet.collector" Version="6.0.2">
+    <PackageReference Include="coverlet.collector" Version="6.0.3">
       <PrivateAssets>all</PrivateAssets>
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
     </PackageReference>