feat: update flake.

default.nix

@@ -1,17 +1,17 @@
-{ pkgs ? (
+{
+  pkgs ? (
     let
       inherit (builtins) fetchTree fromJSON readFile;
       inherit ((fromJSON (readFile ./flake.lock)).nodes) nixpkgs gomod2nix;
     in
-    import (fetchTree nixpkgs.locked) {
-      overlays = [
-        (import "${fetchTree gomod2nix.locked}/overlay.nix")
-      ];
-    }
-  )
-, buildGoApplication ? pkgs.buildGoApplication
+      import (fetchTree nixpkgs.locked) {
+        overlays = [
+          (import "${fetchTree gomod2nix.locked}/overlay.nix")
+        ];
+      }
+  ),
+  buildGoApplication ? pkgs.buildGoApplication,
 }:
-
 buildGoApplication {
   pname = "upfast";
   version = "1.3";