flake.lock: Update

[github-actions[bot]]

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

Flake lock file updates:

• Updated input 'nixos-2311':
    'github:NixOS/nixpkgs/392320f29b07e74131d4e4a7b435e8e9b9b85adf' (2024-04-17)
  → 'github:NixOS/nixpkgs/6eccabe980dcb2048aab7f97f862fb6d79b98abe' (2024-05-12)
• Updated input 'nixos-unstable':
    'github:NixOS/nixpkgs/203fac824e2fdfed2e3a832b8123d9a64ee58b43' (2024-04-17)
  → 'github:NixOS/nixpkgs/3281bec7174f679eabf584591e75979a258d8c40' (2024-05-12)

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