flake.lock: Update

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/b9fd420fa535fd254c6f1f26df770b32a9dc98b4' (2022-08-23)
  → 'github:NixOS/nixpkgs/f677051b8dc0b5e2a9348941c99eea8c4b0ff28f' (2022-09-18)

Author: EmilIvanichkovv

flake.lock

@@ -7,7 +7,7 @@
   };
 
   inputs = {
-    nixpkgs.url = "github:NixOS/nixpkgs/nixos-22.05";
+    nixpkgs.url = "github:NixOS/nixpkgs/nixos-unstable";
     flake-utils.url = github:numtide/flake-utils;
   };