Bump Microsoft.NET.Test.Sdk from 18.0.1 to 18.3.0 (#110)

---
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

@@ -7,7 +7,7 @@
     <PackageVersion Include="Microsoft.SourceLink.GitHub" Version="10.0.103" />
   </ItemGroup>
   <ItemGroup>
-    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
+    <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.3.0" />
     <PackageVersion Include="MSTest.TestAdapter" Version="4.1.0" />
     <PackageVersion Include="MSTest.TestFramework" Version="4.1.0" />
     <PackageVersion Include="System.CodeDom" Version="10.0.3" />