Bump Microsoft.NET.Test.Sdk from 18.0.1 to 18.3.0 (#281)

---
updated-dependencies:
- dependency-name: Microsoft.NET.Test.Sdk
  dependency-version: 18.3.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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Author: dependabot[bot]

Directory.Packages.props

@@ -57,7 +57,7 @@
 		<PackageVersion Include="Microsoft.SourceLink.GitHub" Version="10.0.103" />
 
 		<!-- Testing Dependencies -->
-		<PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
+		<PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.3.0" />
 		<PackageVersion Include="xunit" Version="2.9.3" />
 		<PackageVersion Include="xunit.runner.visualstudio" Version="3.1.5" />
 		<PackageVersion Include="FluentAssertions" Version="8.8.0" />