flake.lock: Update

Flake lock file updates:

• Updated input 'doomemacs':
    'github:doomemacs/doomemacs/36e7aaa619342eff61b1daf3ac664f94d5272db7?narHash=sha256-AW30n1Nr8sbgN6vvyfFmgL7Jh9PwDRYDH0HmVIlsvqs%3D' (2024-07-19)
  → 'github:doomemacs/doomemacs/f5b3958331cebf66383bf22bdc8b61cd44eca645?narHash=sha256-nCh17m%2BvtMr5x/n0ZR59VxoGJNbcPk/9YCeHFF0h5qc%3D' (2024-07-21)
• Updated input 'emacs-overlay':
    'github:nix-community/emacs-overlay/56a275531c6bc329a0851ba34902a2b5f021a03f?narHash=sha256-ZSn70TYYIRD/N44Ao5mSHGEqz6Ltu8YENGn3g7q1ReM%3D' (2024-07-20)
  → 'github:nix-community/emacs-overlay/b3c3f03e594177220148b3e2f9aef9228cc04321?narHash=sha256-r4O1YRu23CudbakeyrH0R0skMabU9hbqklSR0a0XvWc%3D' (2024-07-23)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/ad0111043c09f7d0f6b9f039882cbf350d4f7d49?narHash=sha256-X5%2BQA5K3J2KA20YEaBJ%2BGKDj/XIb5PutHmphgYQUszA%3D' (2024-07-19)
  → 'github:NixOS/nixpkgs/453402b94f39f968a7c27df28e060f69e4a50c3b?narHash=sha256-iQ%2Bquy3A1EKeFyLyAtjhgSvZHH7r%2BxybXZkxMhasN4I%3D' (2024-07-22)