Bump Microsoft.NET.Test.Sdk from 17.3.2 to 17.4.0 (#152)

Bumps [Microsoft.NET.Test.Sdk](https://github.com/microsoft/vstest) from 17.3.2 to 17.4.0.
- [Release notes](https://github.com/microsoft/vstest/releases)
- [Commits](microsoft/vstest@v17.3.2...v17.4.0)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

test/Serilog.Sinks.Grafana.Loki.Tests/Serilog.Sinks.Grafana.Loki.Tests.csproj

@@ -8,7 +8,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.3.2" />
+        <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.4.0" />
         <PackageReference Include="Shouldly" Version="4.1.0" />
         <PackageReference Include="xunit" Version="2.4.2" />
         <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5">