Bump Microsoft.NET.Test.Sdk from 17.12.0 to 18.0.1

---
updated-dependencies:
- dependency-name: Microsoft.NET.Test.Sdk
  dependency-version: 18.0.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

tests/CloudflareExtension.Tests.csproj

@@ -9,7 +9,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="18.0.1" />
     <PackageReference Include="MSTest.TestAdapter" Version="3.6.4" />
     <PackageReference Include="MSTest.TestFramework" Version="3.6.4" />
     <PackageReference Include="Moq" Version="4.20.72" />