flake.lock: Update

Flake lock file updates:

• Updated input 'fenix':
    'github:nix-community/fenix/a941fe943bd7c4c683d8aa8e1a3a1d0595516051' (2024-02-24)
  → 'github:nix-community/fenix/f70eee0e38bc2287687c853df9b4ed6f6a028eb0' (2024-03-02)
• Updated input 'fenix/nixpkgs':
    'github:nixos/nixpkgs/cbc4211f0afffe6dfd2478a62615dd5175a13f9a' (2024-02-23)
  → 'github:nixos/nixpkgs/1536926ef5621b09bba54035ae2bb6d806d72ac8' (2024-02-29)
• Updated input 'fenix/rust-analyzer-src':
    'github:rust-lang/rust-analyzer/03b3cb6be9f21c082f4206b35c7fe7f291c94eaa' (2024-02-23)
  → 'github:rust-lang/rust-analyzer/79e0fee6a30a5f563e9b709cc5959694709e19c4' (2024-03-01)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/89a2a12e6c8c6a56c72eb3589982c8e2f89c70ea' (2024-02-25)
  → 'github:NixOS/nixpkgs/9a0aa4020d1558ff0439de7e07d2caf53147b490' (2024-03-02)
• Updated input 'nixpkgs-master':
    'github:NixOS/nixpkgs/7794d8a78570335f10b0f97ae72b14b33c6addc2' (2024-02-24)
  → 'github:NixOS/nixpkgs/a0a754e1dfc3e9a063b117c0139e5627bb2aa480' (2024-03-03)