chore(deps): update dependency microsoft.testing.extensions.codecoverage to 18.12.0 (#4537)

This PR contains the following updates:

| Package | Change |
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|---|---|---|---|
|
[Microsoft.Testing.Extensions.CodeCoverage](https://redirect.github.com/microsoft/codecoverage)
| `18.11.2` → `18.12.0` |
![age](https://developer.mend.io/api/mc/badges/age/nuget/Microsoft.Testing.Extensions.CodeCoverage/18.12.0?slim=true)
|
![confidence](https://developer.mend.io/api/mc/badges/confidence/nuget/Microsoft.Testing.Extensions.CodeCoverage/18.11.2/18.12.0?slim=true)
|

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src/Directory.Packages.props

@@ -90,7 +90,7 @@
     <PackageVersion Include="TUnit" Version="$(TUnitVersion)"/>
     <PackageVersion Include="TUnit.Core" Version="$(TUnitVersion)"/>
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="18.10.1"/>
-    <PackageVersion Include="Microsoft.Testing.Extensions.CodeCoverage" Version="18.11.2"/>
+    <PackageVersion Include="Microsoft.Testing.Extensions.CodeCoverage" Version="18.12.0"/>
     <PackageVersion Include="Microsoft.Testing.Platform.MSBuild" Version="2.4.1"/>
     <PackageVersion Include="Microsoft.Reactive.Testing" Version="7.0.0"/>
     <PackageVersion Include="System.Reactive" Version="7.0.0"/>