Update dependency coverlet.collector to v6

Author: renovate[bot]

src/dotnet/Directory.Packages.props

@@ -12,7 +12,7 @@
         <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.14.1"/>
         <PackageVersion Include="xunit" Version="2.9.3"/>
         <PackageVersion Include="xunit.runner.visualstudio" Version="2.8.2"/>
-        <PackageVersion Include="coverlet.collector" Version="3.2.0"/>
+        <PackageVersion Include="coverlet.collector" Version="6.0.4"/>
     </ItemGroup>
 
 </Project>