Bump Microsoft.Testing.Extensions.CodeCoverage from 18.1.0 to 18.3.1 (#3027)

Author: dependabot[bot]

src/CommunityToolkit.Maui.SourceGenerators.Internal.UnitTests/CommunityToolkit.Maui.SourceGenerators.Internal.UnitTests.csproj

@@ -19,7 +19,7 @@
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Analyzer.Testing" Version="1.1.2" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.CodeFix.Testing" Version="1.1.2" />
     <PackageReference Include="xunit.v3.mtp-v2" Version="3.2.1" />
-    <PackageReference Include="Microsoft.Testing.Extensions.CodeCoverage" Version="18.1.0" />
+    <PackageReference Include="Microsoft.Testing.Extensions.CodeCoverage" Version="18.3.1" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.Workspaces" Version="5.0.0" />
     <PackageReference Include="Microsoft.CodeAnalysis.CSharp.SourceGenerators.Testing" Version="1.1.2" />
     <PackageReference Include="Microsoft.Maui.Controls" Version="$(MauiPackageVersion)" />