flake.lock: Update

Flake lock file updates:

• Updated input 'challenges-ms-develop':
    'github:Bootstrap-Academy/challenges-ms/5450117b61c3e2fc4da4016564e48f0e15bac3fe' (2024-02-12)
  → 'github:Bootstrap-Academy/challenges-ms/853851b028e56f297eb77171c4f1f1c999ddfab6' (2024-02-25)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/526d051b128b82ae045a70e5ff1adf8e6dafa560' (2024-02-20)
  → 'github:NixOS/nixpkgs/c8e74c2f83fe12b4e5a8bd1abbc090575b0f7611' (2024-02-28)
• Updated input 'nixpkgs-staging':
    'github:NixOS/nixpkgs/ad6f61ade2909d1c38c6d1f85fbd59f9e760fb36' (2024-02-22)
  → 'github:NixOS/nixpkgs/93be09b31e018b99a38767b93595eb9d6f5bf00a' (2024-02-29)
• Updated input 'sandkasten':
    'github:Defelo/sandkasten/4e16eb03eb2f7776c4ebfd9e03e7423c47bbbf06' (2024-02-18)
  → 'github:Defelo/sandkasten/9ae998b78ddec734fcdf34f385d07d43b435fa33' (2024-02-25)
• Updated input 'sandkasten/fenix':
    'github:nix-community/fenix/761431323e30846bae160e15682cfa687c200606' (2024-02-17)
  → 'github:nix-community/fenix/a941fe943bd7c4c683d8aa8e1a3a1d0595516051' (2024-02-24)
• Updated input 'sandkasten/fenix/nixpkgs':
    'github:nixos/nixpkgs/a4d4fe8c5002202493e87ec8dbc91335ff55552c' (2024-02-15)
  → 'github:nixos/nixpkgs/cbc4211f0afffe6dfd2478a62615dd5175a13f9a' (2024-02-23)
• Updated input 'sandkasten/fenix/rust-analyzer-src':
    'github:rust-lang/rust-analyzer/b9b0d29b8e69b02457cfabe20c4c69cdb45f3cc5' (2024-02-15)
  → 'github:rust-lang/rust-analyzer/03b3cb6be9f21c082f4206b35c7fe7f291c94eaa' (2024-02-23)
• Updated input 'sandkasten/nixpkgs':
    'github:NixOS/nixpkgs/69405156cffbdf2be50153f13cbdf9a0bea38e49' (2024-02-17)
  → 'github:NixOS/nixpkgs/89a2a12e6c8c6a56c72eb3589982c8e2f89c70ea' (2024-02-25)
• Updated input 'sandkasten/nixpkgs-master':
    'github:NixOS/nixpkgs/347a8ce65b6747babcd4e037314f6c6565912c2a' (2024-02-18)
  → 'github:NixOS/nixpkgs/7794d8a78570335f10b0f97ae72b14b33c6addc2' (2024-02-24)
• Updated input 'skills-ms-develop':
    'github:Bootstrap-Academy/skills-ms/dd1083a1abd8280fa44d1fc377936229c3b52a53' (2024-02-12)
  → 'github:Bootstrap-Academy/skills-ms/53ec994024c13fd1ce188f59f240f0b5af637bb1' (2024-02-27)
• Updated input 'sops-nix':
    'github:Mic92/sops-nix/f6b80ab6cd25e57f297fe466ad689d8a77057c11' (2024-02-21)
  → 'github:Mic92/sops-nix/a1c8de14f60924fafe13aea66b46157f0150f4cf' (2024-02-26)
• Updated input 'sops-nix/nixpkgs':
    'github:NixOS/nixpkgs/6e2f00c83911461438301db0dba5281197fe4b3a' (2024-02-17)
  → 'github:NixOS/nixpkgs/f63ce824cd2f036216eb5f637dfef31e1a03ee89' (2024-02-24)
• Updated input 'sops-nix/nixpkgs-stable':
    'github:NixOS/nixpkgs/69405156cffbdf2be50153f13cbdf9a0bea38e49' (2024-02-17)
  → 'github:NixOS/nixpkgs/89a2a12e6c8c6a56c72eb3589982c8e2f89c70ea' (2024-02-25)