chore(deps): update dependency coverlet.msbuild to 6.0.3

Author: renovate[bot]

src/Directory.Packages.props

@@ -13,7 +13,7 @@
     <PackageVersion Include="Avalonia.ReactiveUI" Version="$(AvaloniaVersion)" />
     <PackageVersion Include="Citrus.Avalonia" Version="2.1.1" />
     <PackageVersion Include="MessageBox.Avalonia" Version="3.2.0" />
-    <PackageVersion Include="coverlet.msbuild" Version="6.0.2" />
+    <PackageVersion Include="coverlet.msbuild" Version="6.0.3" />
     <PackageVersion Include="DiffEngine" Version="15.8.0" />
     <PackageVersion Include="FluentAssertions" Version="8.0.0" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />