chore(flake): bump inputs

Flake lock file updates:

• Updated input 'nci':
    'github:yusdacra/nix-cargo-integration/d66e5e01ce5eb8e96229fc38ab653b43aab07b38?narHash=sha256-ISfgyPt/NOZDXfcP3mQDgL8pqQLQ0FzSOGDyEj7CkIw%3D' (2025-03-22)
  → 'github:yusdacra/nix-cargo-integration/69a874c5070f9e718a9b2c125cafc0ffc4b5babf?narHash=sha256-SIwwnO0dbpVzyanXe4ecKe/axg2LNRc3qEpIbWo8gKo%3D' (2025-03-28)
• Updated input 'nci/rust-overlay':
    'github:oxalica/rust-overlay/c60d41987df3c853e2a842de2c63ded40400979b?narHash=sha256-9jWi3gw3fEIgEslnFjH/s1I%2BIyf1%2B4t5B1Ed1FOiy8o%3D' (2025-03-22)
  → 'github:oxalica/rust-overlay/f93da1d26ba9963f34f94a6872b67a7939699543?narHash=sha256-gE8t%2BU9miTwm2NYWS9dFY8H1/QB4ifaFDq1KdV9KEqo%3D' (2025-03-28)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/94c4dbe77c0740ebba36c173672ca15a7926c993?narHash=sha256-GiQ40ndXRnmmbDZvuv762vS%2Bgew1uDpFwOfgJ8tLiEs%3D' (2025-03-21)
  → 'github:NixOS/nixpkgs/6c5963357f3c1c840201eda129a99d455074db04?narHash=sha256-yQugdVfi316qUfqzN8JMaA2vixl%2B45GxNm4oUfXlbgw%3D' (2025-03-27)
• Updated input 'treefmt-nix':
    'github:numtide/treefmt-nix/adc195eef5da3606891cedf80c0d9ce2d3190808?narHash=sha256-XRE8hL4vKIQyVMDXykFh4ceo3KSpuJF3ts8GKwh5bIU%3D' (2025-03-19)
  → 'github:numtide/treefmt-nix/29a3d7b768c70addce17af0869f6e2bd8f5be4b7?narHash=sha256-WRAylyYptt6OX5eCEBWyTwOEqEtD6zt33rlUkr6u3cE%3D' (2025-03-27)

Author: github-actions[bot]