flake.lock: Update

Flake lock file updates:

• Updated input 'backend-develop':
    'github:Bootstrap-Academy/backend/2a34ae1648884b389881e1397e63148bc2b5c3d2?narHash=sha256-SXnkhWEgeA0X87HL8v7tkEC074yaRDtNLEPlnv/wIqs%3D' (2024-12-28)
  → 'github:Bootstrap-Academy/backend/5adc7e1f8f02a86e858824f5fb1268171699f376?narHash=sha256-%2BUrb7I98Qu%2BaDVzB48CLpgxknre7fKBDGzNQi2kd4NI%3D' (2025-01-05)
• Updated input 'backend-develop/devenv':
    'github:cachix/devenv/4b8677f62022e6a235cc4e93a6bbc3d57b77817f?narHash=sha256-oYitbnWHQIEmd5e/e8yvuy6T41zVVe/V8868nOnwNfk%3D' (2024-12-23)
  → 'github:cachix/devenv/1cd2afada1b407d1f7d2eca91984ed5c85ffb2f7?narHash=sha256-aZ/PfrgxG8l92hfNZJSTQF3pCzRpYCzyKAUPzf7j4tk%3D' (2024-12-30)
• Updated input 'backend-develop/fenix':
    'github:nix-community/fenix/89a46538f83866ba7211ed8837b87dda9650e33a?narHash=sha256-c9nj3GJrckuQEOQsrlPQyUQvxDUIBtwERT70KbNCoVA%3D' (2024-12-25)
  → 'github:nix-community/fenix/bfba822a4220b0e2c4dc7f36a35e4c8450cd9a9c?narHash=sha256-xC6X49L55xo7AV%2BpAYclOj5UNWtBo/xx5aB5IehJD0M%3D' (2025-01-01)
• Updated input 'backend-develop/fenix/nixpkgs':
    'github:nixos/nixpkgs/d70bd19e0a38ad4790d3913bf08fcbfc9eeca507?narHash=sha256-4EVBRhOjMDuGtMaofAIqzJbg4Ql7Ai0PSeuVZTHjyKQ%3D' (2024-12-19)
  → 'github:nixos/nixpkgs/88195a94f390381c6afcdaa933c2f6ff93959cb4?narHash=sha256-0q9NGQySwDQc7RhAV2ukfnu7Gxa5/ybJ2ANT8DQrQrs%3D' (2024-12-29)
• Updated input 'backend-develop/fenix/rust-analyzer-src':
    'github:rust-lang/rust-analyzer/dc90d2d7ffd2a3a934475ce2cd503ef55b50fe4c?narHash=sha256-ai/MT2LbfdixDZlrHTuISMpyQ6xcCtMrCKC8TwUE9c4%3D' (2024-12-24)
  → 'github:rust-lang/rust-analyzer/085ad107943996c344633d58f26467b05f8e2ff0?narHash=sha256-DQgwi3pwaasWWDfNtXIX0lW5KvxQ%2BqVhxO1J7l68Qcc%3D' (2024-12-31)
• Updated input 'backend-develop/nixpkgs':
    'github:NixOS/nixpkgs/d70bd19e0a38ad4790d3913bf08fcbfc9eeca507?narHash=sha256-4EVBRhOjMDuGtMaofAIqzJbg4Ql7Ai0PSeuVZTHjyKQ%3D' (2024-12-19)
  → 'github:NixOS/nixpkgs/88195a94f390381c6afcdaa933c2f6ff93959cb4?narHash=sha256-0q9NGQySwDQc7RhAV2ukfnu7Gxa5/ybJ2ANT8DQrQrs%3D' (2024-12-29)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/d49da4c08359e3c39c4e27c74ac7ac9b70085966?narHash=sha256-MgdXpeX2GuJbtlBrH9EdsUeWl/yXEubyvxM1G%2ByO4Ak%3D' (2024-12-27)
  → 'github:NixOS/nixpkgs/d29ab98cd4a70a387b8ceea3e930b3340d41ac5a?narHash=sha256-vk0xwGZSlvZ/596yxOtsk4gxsIx2VemzdjiU8zhjgWw%3D' (2025-01-03)
• Updated input 'sandkasten':
    'github:Defelo/sandkasten/ad001be00c6249ab3ab80e51c139851bc1580e27?narHash=sha256-QCI6HAVnyq2wWJvACcKtEBK9Z7tLzESkAJwMKx0DqJ4%3D' (2024-12-27)
  → 'github:Defelo/sandkasten/ea3191ca699dbb1f2d2584dee851bf6a2315fbc6?narHash=sha256-IF%2B4aTGf97erBJrcPm9qYhAUwZnz0pP%2BgMkKKoCkjE4%3D' (2025-01-04)
• Updated input 'sandkasten/fenix':
    'github:nix-community/fenix/89a46538f83866ba7211ed8837b87dda9650e33a?narHash=sha256-c9nj3GJrckuQEOQsrlPQyUQvxDUIBtwERT70KbNCoVA%3D' (2024-12-25)
  → 'github:nix-community/fenix/bfba822a4220b0e2c4dc7f36a35e4c8450cd9a9c?narHash=sha256-xC6X49L55xo7AV%2BpAYclOj5UNWtBo/xx5aB5IehJD0M%3D' (2025-01-01)
• Updated input 'sandkasten/fenix/nixpkgs':
    'github:nixos/nixpkgs/d70bd19e0a38ad4790d3913bf08fcbfc9eeca507?narHash=sha256-4EVBRhOjMDuGtMaofAIqzJbg4Ql7Ai0PSeuVZTHjyKQ%3D' (2024-12-19)
  → 'github:nixos/nixpkgs/88195a94f390381c6afcdaa933c2f6ff93959cb4?narHash=sha256-0q9NGQySwDQc7RhAV2ukfnu7Gxa5/ybJ2ANT8DQrQrs%3D' (2024-12-29)
• Updated input 'sandkasten/fenix/rust-analyzer-src':
    'github:rust-lang/rust-analyzer/dc90d2d7ffd2a3a934475ce2cd503ef55b50fe4c?narHash=sha256-ai/MT2LbfdixDZlrHTuISMpyQ6xcCtMrCKC8TwUE9c4%3D' (2024-12-24)
  → 'github:rust-lang/rust-analyzer/085ad107943996c344633d58f26467b05f8e2ff0?narHash=sha256-DQgwi3pwaasWWDfNtXIX0lW5KvxQ%2BqVhxO1J7l68Qcc%3D' (2024-12-31)
• Updated input 'sandkasten/nixpkgs':
    'github:NixOS/nixpkgs/6c90912761c43e22b6fb000025ab96dd31c971ff?narHash=sha256-8T660guvdaOD%2B2/Cj970bWlQwAyZLKrrbkhYOFcY1YE%3D' (2024-12-23)
  → 'github:NixOS/nixpkgs/edf04b75c13c2ac0e54df5ec5c543e300f76f1c9?narHash=sha256-tfYRbFhMOnYaM4ippqqid3BaLOXoFNdImrfBfCp4zn0%3D' (2024-12-31)
• Updated input 'sandkasten/nixpkgs-master':
    'github:NixOS/nixpkgs/138326d6e9841ab9e6161730d40e09cedd670c40?narHash=sha256-O1OXa12dHaObowGsfiM8pgphWfSXJj5v8sTxFoPXR0A%3D' (2024-12-25)
  → 'github:NixOS/nixpkgs/e4f449ab51a283676d3b520c3dbaa3eafa5025b4?narHash=sha256-79B9bfMHIEtCN0nMFZGJpzgUtdE39JaHQscoKN9HOKg%3D' (2025-01-02)
• Updated input 'sops-nix':
    'github:Mic92/sops-nix/bcb8b65aa596866eb7e5c3e1a6cccbf5d1560b27?narHash=sha256-ZjUjbvS06jf4fElOF4ve8EHjbpbRVHHypStoY8HGzk8%3D' (2024-12-29)
  → 'github:Mic92/sops-nix/5dc08f9cc77f03b43aacffdfbc8316807773c930?narHash=sha256-xJRN0FmX9QJ6%2Bw8eIIIxzBU1AyQcLKJ1M/Gp6lnSD20%3D' (2025-01-05)