update nodejs

.tool-versions

···
-nodejs 20.19.0
+nodejs 22.15.0

flake.nix

···
             mdx-language-server = pkgs.writeShellScriptBin "mdx-language-server" ''exec yarn run mdx-language-server "$@"'';
           in
             builtins.attrValues {
-              inherit (pkgs) nodejs_20 yarn2nix nil tailwindcss-language-server;
+              inherit (pkgs) nodejs_22 yarn2nix nil tailwindcss-language-server;
               inherit (pkgs) pre-commit alejandra reuse;
-              inherit (pkgs.nodejs_20.pkgs) yarn typescript-language-server;
+              inherit (pkgs.nodejs_22.pkgs) yarn typescript-language-server;
               inherit astro-ls mdx-language-server;
             };
         };