Bump Microsoft.NET.Test.Sdk from 17.14.1 to 18.0.0

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Tests/Tests.csproj

@@ -10,7 +10,7 @@
     <PackageReference Include="Xunit" Version="2.9.3" />
     <PackageReference Include="Verify.Xunit" Version="31.2.0" />
     <PackageReference Include="xunit.runner.visualstudio" Version="3.1.1" PrivateAssets="all" />
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.0" />
     <ProjectReference Include="..\Publicize.Fody\Publicize.Fody.csproj" />
     <ProjectReference Include="..\AssemblyToProcess\AssemblyToProcess.csproj" />
   </ItemGroup>