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]

eFormAPI/Plugins/BackendConfiguration.Pn/BackendConfiguration.Pn.Test/BackendConfiguration.Pn.Test.csproj

@@ -8,7 +8,7 @@
     </PropertyGroup>
 
     <ItemGroup>
-      <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
+      <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.0" />
       <PackageReference Include="NSubstitute" Version="5.3.0" />
       <PackageReference Include="NUnit" Version="4.4.0" />
       <PackageReference Include="NUnit.Analyzers" Version="4.10.0">