flake.lock: Update

Automated changes by the [update-flake-lock](https://github.com/DeterminateSystems/update-flake-lock) GitHub Action. ``` Flake lock file updates: • Updated input 'pre-commit-hooks': 'github:cachix/git-hooks.nix/94ee657f6032d913fe0ef49adaa743804635b0bb' (2025-01-16) → 'github:cachix/git-hooks.nix/15a87cedeb67e3dbc8d2f7b9831990dffcf4e69f' (2025-01-19) ``` ### Running GitHub Actions on this PR GitHub Actions will not run workflows on pull requests which are opened by a GitHub Action. To run GitHub Actions workflows on this PR, run: ```sh git branch -D update_flake_lock_action git fetch origin git checkout update_flake_lock_action git commit --amend --no-edit git push origin update_flake_lock_action --force ```