Update System.Linq 4.0.2-* => 4.1.0-*.

src/Microsoft.Extensions.Configuration.Abstractions/project.json

@@ -18,7 +18,7 @@
     "net451": { },
     "dotnet5.4": {
       "dependencies": {
-        "System.Linq": "4.0.2-*"
+        "System.Linq": "4.1.0-*"
       }
     }
   }