Bump Microsoft.NET.Test.Sdk from 17.11.1 to 18.0.0 (#441)

---
updated-dependencies:
- dependency-name: Microsoft.NET.Test.Sdk
  dependency-version: 18.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Author: dependabot[bot]

Directory.Packages.props

@@ -22,7 +22,7 @@
         <PackageVersion Include="Akka.Streams.TestKit" Version="$(AkkaVersion)" />
 
         <PackageVersion Include="Microsoft.Extensions.Hosting" Version="6.0.1" />
-        <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.11.1" />
+        <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.0.0" />
         <PackageVersion Include="Docker.DotNet" Version="3.125.15" />
         <PackageVersion Include="xunit" Version="2.9.2" />
         <PackageVersion Include="xunit.runner.visualstudio" Version="2.8.2" />