python3Packages.tornado: 6.1 -> 6.2

pkgs/development/python-modules/tornado/default.nix

···
 
 buildPythonPackage rec {
   pname = "tornado";
-  version = "6.1";
+  version = "6.2";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "33c6e81d7bd55b468d2e793517c909b139960b6c790a60b7991b9b6b76fb9791";
+    sha256 = "sha256-m2MEGb3oTsZmv9fqCkyyqKZRwtXMzb3RlyoMhZ38PBM=";
   };
 
   checkInputs = [