flake.lock: Update (#1612)

Flake lock file updates:

• Updated input 'flake-utils':
    'github:numtide/flake-utils/f9e7cf818399d17d347f847525c5a5a8032e4e44' (2023-08-23)
  → 'github:numtide/flake-utils/ff7b65b44d01cf9ba6a71320833626af21126384' (2023-09-12)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/db9208ab987cdeeedf78ad9b4cf3c55f5ebd269b' (2023-09-08)
  → 'github:NixOS/nixpkgs/ace5093e36ab1e95cb9463863491bee90d5a4183' (2023-09-15)
• Updated input 'pre-commit-hooks':
    'github:cachix/pre-commit-hooks.nix/7e3517c03d46159fdbf8c0e5c97f82d5d4b0c8fa' (2023-08-17)
  → 'github:cachix/pre-commit-hooks.nix/4f883a76282bc28eb952570afc3d8a1bf6f481d7' (2023-09-10)
• Updated input 'rust-overlay':
    'github:oxalica/rust-overlay/1b4fad9dccece45c25b9ebda607427d69a8f1eae' (2023-09-09)
  → 'github:oxalica/rust-overlay/f84bb1621574473d05e6ed79ba57a371d8ad8259' (2023-09-16)
• Updated input 'topiary':
    'github:tweag/topiary/fe6083d2b7c762f5e8c63b9c79a8bd3ced12ea5d' (2023-09-09)
  → 'github:tweag/topiary/7e6cb4f8b505eacee57aaf3c1ab0f3cf539da159' (2023-09-14)

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