flake.lock, poetry.lock: update

• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/85f1ba3e51676fa8cc604a3d863d729026a6b8eb' (2023-11-04)
  → 'github:nixos/nixpkgs/a9bf124c46ef298113270b1f84a164865987a91c' (2023-12-11)

added alabaster 0.7.13
updated babel 2.13.1 -> 2.14.0
updated certifi 2023.7.22 -> 2023.11.17
updated docutils 0.18.1 -> 0.20.1
updated exceptiongroup 1.1.3 -> 1.2.0
updated idna 3.4 -> 3.6
updated importlib-metadata 6.8.0 -> 7.0.0
updated pathspec 0.11.2 -> 0.12.1
updated platformdirs 4.0.0 -> 4.1.0
updated pygments 2.16.1 -> 2.17.2
removed setuptools 68.2.2
updated typing-extensions 4.8.0 -> 4.9.0