flake.lock: Update (#2005)

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/ef7ef716552f30ba6894525ab6711af6e4e634fe?narHash=sha256-U4RjfZaVLVs8Fy5MZaslp62fbv/PVaPJjSQOdZjjw9A%3D' (2025-11-02)
  → 'github:nixos/nixpkgs/52f25dd8c856c63f48ab18471da1b290ba69ccdb?narHash=sha256-WJBtJsVUIvcJMUqTVtC57lHQImDfi2aNTLeL6ec1B5g%3D' (2025-11-08)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

Author: github-actions[bot]