Update dependency coverlet.collector to v6

Author: renovate[bot]

Directory.Packages.props

@@ -18,7 +18,7 @@
   </ItemGroup>
 
   <ItemGroup Label="Tests">
-    <PackageVersion Include="coverlet.collector" Version="3.2.0" />
+    <PackageVersion Include="coverlet.collector" Version="6.0.3" />
     <PackageVersion Include="Microsoft.NET.Test.Sdk" Version="17.4.1" />
     <PackageVersion Include="Verify.Xunit" Version="19.5.0" />
     <PackageVersion Include="xunit" Version="2.4.2" />