flake.lock: Update

Flake lock file updates:

• Updated input 'fenix':
    'github:nix-community/fenix/87b4d20f896c99018dde4702a9c6157b516f2a76?narHash=sha256-U1DWb5c3EfkA7pqx5V1H4AWRA%2BEaE6UJ0lIRvK1RxgM%3D' (2024-11-01)
  → 'github:nix-community/fenix/f9662e6ea6020671e1e17102bd20d6692bb38aba?narHash=sha256-J3At8JDKpQGDeDUcz1eh0h5yFwNH7fPfm%2BN95TxiOq4%3D' (2025-01-19)
• Updated input 'fenix/rust-analyzer-src':
    'github:rust-lang/rust-analyzer/0ba893e1a00d92557ac91efb771d72eee36ca687?narHash=sha256-0Uq%2B/B8eu7pw8B8pxuGdFYKjcVLwNMcHfDxU9sXh7rg%3D' (2024-10-31)
  → 'github:rust-lang/rust-analyzer/248bd511aee2c1c1cb2d5314649521d6d93b854a?narHash=sha256-W8xioeq%2Bh9dzGvtXPlQAn2nXtgNDN6C8uA1/9F2JP5I%3D' (2025-01-18)
• Updated input 'flake-utils':
    'github:numtide/flake-utils/c1dfcf08411b08f6b8615f7d8971a2bfa81d5e8a?narHash=sha256-X6rJYSESBVr3hBoH0WbKE5KvhPU5bloyZ2L4K60/fPQ%3D' (2024-09-17)
  → 'github:numtide/flake-utils/11707dc2f618dd54ca8739b309ec4fc024de578b?narHash=sha256-l0KFg5HjrsfsO/JpG%2Br7fRrqm12kzFHyUHqHCVpMMbI%3D' (2024-11-13)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/807e9154dcb16384b1b765ebe9cd2bba2ac287fd?narHash=sha256-l253w0XMT8nWHGXuXqyiIC/bMvh1VRszGXgdpQlfhvU%3D' (2024-10-29)
  → 'github:NixOS/nixpkgs/5df43628fdf08d642be8ba5b3625a6c70731c19c?narHash=sha256-Tbk1MZbtV2s5aG%2BiM99U8FqwxU/YNArMcWAv6clcsBc%3D' (2025-01-16)