optimize filter condition for DependencyContextAssemblyFinder

Author: Sergey Komisarchik

src/Serilog.Settings.Configuration/Settings/Configuration/Assemblies/DependencyContextAssemblyFinder.cs

@@ -27,7 +27,7 @@ where IsCaseInsensitiveMatch(assemblyName.Name, nameToFind)
 
             static bool IsReferencingSerilog(Library library)
             {
-                return library.Dependencies.Any(dependency => dependency.Name.ToLowerInvariant() == "serilog");
+                return library.Dependencies.Any(dependency => dependency.Name.Equals("serilog", StringComparison.OrdinalIgnoreCase));
             }
         }
     }