chore(deps): update dependency microsoft.testing.extensions.codecoverage to v18 (#3230)

Co-authored-by: Renovate Bot <[email protected]>

Author: thomhurst

Directory.Packages.props

@@ -37,7 +37,7 @@
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.14.1" />
     <PackageVersion Include="Microsoft.Playwright" Version="1.55.0" />
     <PackageVersion Include="Microsoft.TemplateEngine.Authoring.TemplateVerifier" Version="9.0.305" />
-    <PackageVersion Include="Microsoft.Testing.Extensions.CodeCoverage" Version="17.14.2" />
+    <PackageVersion Include="Microsoft.Testing.Extensions.CodeCoverage" Version="18.0.4" />
     <PackageVersion Include="Microsoft.Testing.Extensions.CrashDump" Version="1.8.4" />
     <PackageVersion Include="Microsoft.Testing.Extensions.HangDump" Version="1.8.4" />
     <PackageVersion Include="Microsoft.Testing.Extensions.TrxReport" Version="1.8.4" />