flake.lock: Update (#873)

Flake lock file updates:

• Updated input 'flake-parts':
    'github:hercules-ci/flake-parts/205b12d8b7cd4802fbcb8e8ef6a0f1408781a4f9?narHash=sha256-4pDvzqnegAfRkPwO3wmwBhVi/Sye1mzps0zHWYnP88c%3D' (2024-12-04)
  → 'github:hercules-ci/flake-parts/f2f7418ce0ab4a5309a4596161d154cfc877af66?narHash=sha256-soePLBazJk0qQdDVhdbM98vYdssfs3WFedcq%2BraipRI%3D' (2025-01-01)
• Updated input 'flake-parts/nixpkgs-lib':
    'https://github.com/NixOS/nixpkgs/archive/5487e69da40cbd611ab2cadee0b4637225f7cfae.tar.gz?narHash=sha256-1qRH7uAUsyQI7R1Uwl4T%2BXvdNv778H0Nb5njNrqvylY%3D' (2024-12-01)
  → 'https://github.com/NixOS/nixpkgs/archive/e9b51731911566bbf7e4895475a87fe06961de0b.tar.gz?narHash=sha256-CewEm1o2eVAnoqb6Ml%2BQi9Gg/EfNAxbRx1lANGVyoLI%3D' (2025-01-01)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/634fd46801442d760e09493a794c4f15db2d0cbb?narHash=sha256-NYVcA06%2BblsLG6wpAbSPTCyLvxD/92Hy4vlY9WxFI1M%3D' (2024-12-27)
  → 'github:NixOS/nixpkgs/6df24922a1400241dae323af55f30e4318a6ca65?narHash=sha256-dklw3AXr3OGO4/XT1Tu3Xz9n/we8GctZZ75ZWVqAVhk%3D' (2025-01-02)
• Updated input 'rust-overlay':
    'github:oxalica/rust-overlay/a16b9a7cac7f4d39a84234d62e91890370c57d76?narHash=sha256-3zXufMRWUdwmp8/BTmxVW/k4MyqsPjLnnt/IlQyZvhc%3D' (2024-12-28)
  → 'github:oxalica/rust-overlay/d40e15e076bcedc5bf5498a0f8ff5f18de4bf8c3?narHash=sha256-vbkoQTInunSjwx9DKebbCNBq9bim8CRj1VbS4eiABfg%3D' (2025-01-04)

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