python3Packages.panel: 1.4.4 -> 1.5.1

https://github.com/holoviz/panel/releases/tag/v1.5.1

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

···
 
 buildPythonPackage rec {
   pname = "panel";
-  version = "1.4.4";
+  version = "1.5.1";
 
   format = "wheel";
 
···
   # tries to fetch even more artifacts
   src = fetchPypi {
     inherit pname version format;
-    hash = "sha256-tJu5Z2VnsMBzC/aTSMBXJHCAgRrsVjZN1Pz7qA5eCaA=";
+    hash = "sha256-cglT8X3x6tb5ewWluKdTNDi4lFUQqeJQIBSmHGAGDmI=";
     dist = "py3";
     python = "py3";
   };