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

Author: renovate[bot]

src/Directory.Packages.props

@@ -38,7 +38,7 @@
     <PackageVersion Include="FluentAssertions" Version="7.0.0" />
     <PackageVersion Include="Microsoft.Reactive.Testing" Version="6.0.1" />
     <PackageVersion Include="PublicApiGenerator" Version="11.3.0" />
-    <PackageVersion Include="coverlet.msbuild" Version="6.0.2" />
+    <PackageVersion Include="coverlet.msbuild" Version="6.0.3" />
     <PackageVersion Include="Verify.Xunit" Version="28.8.1" />
     <PackageVersion Include="Verify.SourceGenerators" Version="2.5.0" />
     <PackageVersion Include="ReactiveMarbles.SourceGenerator.TestNuGetHelper" Version="1.3.1" />