flake.lock: Update (#2189)

Flake lock file updates:

• Updated input 'fenix':
    'github:nix-community/fenix/ce8747b0d8d6605264651f9ab5c84db6d7a56728' (2023-12-02)
  → 'github:nix-community/fenix/aa632e1b140686853a226fa0bf85ae8ebbf72aab' (2023-12-09)
• Updated input 'fenix/rust-analyzer-src':
    'github:rust-lang/rust-analyzer/e402c494b7c7d94a37c6d789a216187aaf9ccd3e' (2023-12-01)
  → 'github:rust-lang/rust-analyzer/19387d3077c4c81e4a89ecec62917221fed26541' (2023-12-08)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/f5c27c6136db4d76c30e533c20517df6864c46ee' (2023-11-30)
  → 'github:NixOS/nixpkgs/09dc04054ba2ff1f861357d0e7e76d021b273cd7' (2023-12-08)
• Updated input 'utils':
    'github:numtide/flake-utils/ff7b65b44d01cf9ba6a71320833626af21126384' (2023-09-12)
  → 'github:numtide/flake-utils/4022d587cbbfd70fe950c1e2083a02621806a725' (2023-12-04)

Co-authored-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>