flake.lock: Update (#1453)

Flake lock file updates:

• Updated input 'flake-parts':
    'github:hercules-ci/flake-parts/80daad0' (2026-01-11)
  → 'github:hercules-ci/flake-parts/f20dc5d' (2026-03-01)
• Updated input 'flake-parts/nixpkgs-lib':
    'github:nix-community/nixpkgs.lib/2075416' (2025-12-14)
  → 'github:nix-community/nixpkgs.lib/c185c7a' (2026-03-01)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/bfc1b8a' (2026-01-26)
  → 'github:NixOS/nixpkgs/aca4d95' (2026-03-06)
• Updated input 'rust-overlay':
    'github:oxalica/rust-overlay/a1d32c9' (2026-01-31)
  → 'github:oxalica/rust-overlay/c10801f' (2026-03-07)

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

Author: github-actions[bot]