flake.lock: Update (#362)

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/d691274a972b3165335d261cc4671335f5c67de9' (2024-03-14)
  → 'github:NixOS/nixpkgs/44d0940ea560dee511026a53f0e2e2cde489b4d4' (2024-03-23)
• Updated input 'pre-commit-hooks':
    'github:cachix/pre-commit-hooks.nix/5df5a70ad7575f6601d91f0efec95dd9bc619431' (2024-02-15)
  → 'github:cachix/pre-commit-hooks.nix/e611897ddfdde3ed3eaac4758635d7177ff78673' (2024-03-20)
• Updated input 'pre-commit-hooks/gitignore':
    'github:hercules-ci/gitignore.nix/43e1aa1308018f37118e34d3a9cb4f5e75dc11d5' (2023-12-29)
  → 'github:hercules-ci/gitignore.nix/637db329424fd7e46cf4185293b9cc8c88c95394' (2024-02-28)
• Updated input 'pre-commit-hooks/nixpkgs-stable':
    'github:NixOS/nixpkgs/3dc440faeee9e889fe2d1b4d25ad0f430d449356' (2024-01-10)
  → 'github:NixOS/nixpkgs/614b4613980a522ba49f0d194531beddbb7220d3' (2024-03-17)
• Updated input 'rust-overlay':
    'github:oxalica/rust-overlay/42baa9e2e4713572d7481f917243b07dffdf54b8' (2024-03-16)
  → 'github:oxalica/rust-overlay/6529a7975b893c17318cbdd351c771cb8d2c1dcb' (2024-03-23)

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

Author: github-actions[bot]