Bump Microsoft.NET.Test.Sdk from 18.0.1 to 18.4.0 (#170)

---
updated-dependencies:
- dependency-name: Microsoft.NET.Test.Sdk
  dependency-version: 18.4.0
  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>

Author: dependabot[bot]

package-versions.props

@@ -12,7 +12,7 @@
     <GitHubActionsTestLoggerVersion>3.0.*</GitHubActionsTestLoggerVersion>
     <InheritDocVersion>2.0.*</InheritDocVersion>
     <MongoDBDriverVersion>3.5.*</MongoDBDriverVersion>
-    <TestSdkVersion>18.0.*</TestSdkVersion>
+    <TestSdkVersion>18.4.*</TestSdkVersion>
     <XunitVersion>2.9.*</XunitVersion>
     <XunitVisualStudioVersion>3.1.*</XunitVisualStudioVersion>
   </PropertyGroup>