chore(deps): update dependency coverlet.collector to 6.0.4

Author: renovate[bot]

src/NHibernate.Search.Tests/NHibernate.Search.Tests.csproj

@@ -19,7 +19,7 @@
     <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.10.0" />
     <PackageReference Include="NUnit" Version="3.14.0" />
     <PackageReference Include="NUnit3TestAdapter" Version="4.5.0" />
-    <PackageReference Include="coverlet.collector" Version="6.0.2" PrivateAssets="All" />
+    <PackageReference Include="coverlet.collector" Version="6.0.4" PrivateAssets="All" />
     <PackageReference Include="System.Data.SQLite.Core" Version="1.0.118" />
   </ItemGroup>
 </Project>