flake.lock: Update

[typelevel-steward[bot]]

Automated changes by the update-flake-lock GitHub Action.

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:nixos/nixpkgs/045b51a3ae66f673ed44b5bbd1f4a341d96703bf' (2024-02-18)
  → 'github:nixos/nixpkgs/2a34566b67bef34c551f204063faeecc444ae9da' (2024-02-25)

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:

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