Bump Microsoft.Testing.Extensions.CodeCoverage from 18.1.0 to 18.3.1

---
updated-dependencies:
- dependency-name: Microsoft.Testing.Extensions.CodeCoverage
  dependency-version: 18.3.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: microsoft
...

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

Author: dependabot[bot]

AppDataStorage.Test/AppDataStorage.Test.csproj

@@ -12,6 +12,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <PackageReference Include="Microsoft.Testing.Extensions.CodeCoverage" />
     <PackageReference Include="MSTest.TestAdapter" />
     <PackageReference Include="MSTest.TestFramework" />
     <ProjectReference Include="..\AppDataStorage\AppDataStorage.csproj" />

Directory.Packages.props

@@ -8,6 +8,7 @@
     <PackageVersion Include="ktsu.CaseConverter" Version="1.3.4" />
     <PackageVersion Include="Microsoft.SourceLink.GitHub" Version="8.0.0" />
     <PackageVersion Include="Microsoft.SourceLink.AzureRepos.Git" Version="8.0.0" />
+    <PackageVersion Include="Microsoft.Testing.Extensions.CodeCoverage" Version="18.3.1" />
     <PackageVersion Include="MSTest.TestAdapter" Version="4.0.2" />
     <PackageVersion Include="MSTest.TestFramework" Version="4.0.2" />
     <PackageVersion Include="TestableIO.System.IO.Abstractions" Version="22.0.15" />