vscode-extensions.github.copilot{*}: bump (#364729)

pkgs/applications/editors/vscode/extensions/default.nix

···
         mktplcRef = {
           publisher = "github";
           name = "copilot";
-          version = "1.246.1233"; # compatible with vscode ^1.95
-          hash = "sha256-Pz46qTCGtn7q7UqCzwkQbuEEkH6tKxZV1HKSUs9WA8M=";
+          version = "1.251.0"; # compatible with vscode ^1.96
+          hash = "sha256-nv6lTPTPcggwMgO8a4KAF0W7gpou1399f/axnH0sS4s=";
         };
 
         meta = {
···
           publisher = "github";
           name = "copilot-chat";
           # Verify which version is available with nix run nixpkgs#vsce -- show github.copilot-chat --json
-          version = "0.23.2024102903"; # compatible with vscode ^1.95
-          hash = "sha256-FGvB+b24i23bdhpJpCQDvIHqqFvCJrWAKnX6fJgkr2E=";
+          version = "0.24.2024121201"; # compatible with vscode ^1.96
+          hash = "sha256-v3wdodDzYalz927KqqpL4IqEqLRmx1CLWdGBvZgNmpE=";
         };
         meta = {
           description = "GitHub Copilot Chat is a companion extension to GitHub Copilot that houses experimental chat features";