flake.lock: Update

[sops-nix-bot]

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

Flake lock file updates:

• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/8277b539d371bf4308fc5097911aa58bfac1794f' (2023-07-01)
  → 'github:NixOS/nixpkgs/ed6afb10dfdfc97b6bcf0703f1bad8118e9e961b' (2023-07-08)
• Updated input 'nixpkgs-stable':
    'github:NixOS/nixpkgs/f553c016a31277246f8d3724d3b1eee5e8c0842c' (2023-07-02)
  → 'github:NixOS/nixpkgs/510d721ce097150ae3b80f84b04b13b039186571' (2023-07-09)

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