Update flake.lock (#12641)

flake.lock: Update

Flake lock file updates:

• Updated input 'fenix':
    'github:nix-community/fenix/c684a289edf43cfc5cd1bea7c1b61ab9a0fba99c?narHash=sha256-6fkf0JP1OCVxmyBZRdEVQu9wBwLyTI%2BidTISoijxpQE%3D' (2025-11-15)
  → 'github:nix-community/fenix/ad1e51a518dc3f1e4e52890b8f11bd434de6008f?narHash=sha256-wyYhBaCo%2Bm76TegkIG0qBK4dPo0McWtWTjcaf2vwzvI%3D' (2025-11-22)
• Updated input 'fenix/rust-analyzer-src':
    'github:rust-lang/rust-analyzer/2efc80078029894eec0699f62ec8d5c1a56af763?narHash=sha256-rMfWMCOo/pPefM2We0iMBLi2kLBAnYoB9thi4qS7uk4%3D' (2025-11-11)
  → 'github:rust-lang/rust-analyzer/35c06615104e5951be6faed57b8a0cac41051baf?narHash=sha256-uJH6dz5/lRhoTtQf3NS2zmW3lat/yVdLvCd8O6q07Dg%3D' (2025-11-21)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/1d4c88323ac36805d09657d13a5273aea1b34f0c?narHash=sha256-esRhOS0APE6k40Hs/jjReXg%2Brx%2BJ5LkWw7cuWFKlwYA%3D' (2025-11-15)
  → 'github:NixOS/nixpkgs/a8d610af3f1a5fb71e23e08434d8d61a466fc942?narHash=sha256-v5afmLjn/uyD9EQuPBn7nZuaZVV9r%2BJerayK/4wvdWA%3D' (2025-11-20)

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

Author: github-actions[bot]