flake: update the lock (#124)

Automated changes by the
[update-flake-lock](https://github.com/DeterminateSystems/update-flake-lock)
GitHub Action.

```
Flake lock file updates:

• Updated input 'home-manager':
    'github:nix-community/home-manager/a7117efb3725e6197dd95424136f79147aa35e5b?narHash=sha256-5z2422pzWnPXHgq2ms8lcCfttM0dz%2Bhg%2Bx1pCcNkAws%3D' (2024-06-04)
  → 'github:nix-community/home-manager/3d65009effd77cb0d6e7520b68b039836a7606cf?narHash=sha256-Sz8Wh9cAiD5FhL8UWvZxBfnvxETSCVZlqWSYWaCPyu0%3D' (2024-06-09)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/57610d2f8f0937f39dbd72251e9614b1561942d8?narHash=sha256-yZKhxVIKd2lsbOqYd5iDoUIwsRZFqE87smE2Vzf6Ck0%3D' (2024-05-31)
  → 'github:NixOS/nixpkgs/051f920625ab5aabe37c920346e3e69d7d34400e?narHash=sha256-4q0s6m0GUcN7q%2BY2DqD27iLvbcd1G50T2lv08kKxkSI%3D' (2024-06-07)
• Updated input 'nur':
    'github:nix-community/NUR/a70eab203e3b847d10c2b005ef1b944a4c267f3f?narHash=sha256-MahZXIB8kmJta1LKdxxyrNt6ViK5MxfyuKaLpuOm1Ls%3D' (2024-06-05)
  → 'github:nix-community/NUR/c5b737c8ecc08954333f60f42907e743aa24c6ae?narHash=sha256-NZNTXQ9vWoCHsgNehebR7tNTmilOsvTynCwWmgHMbqk%3D' (2024-06-10)
• Updated input 'sops-nix':
    'github:Mic92/sops-nix/d4555e80d80d2fa77f0a44201ca299f9602492a0?narHash=sha256-8Q6mKSsto8gaGczXd4G0lvawdAYLa5Dlh3/g4hl5CaM%3D' (2024-06-03)
  → 'github:Mic92/sops-nix/f0922ad001829b400f0160ba85b47d252fa3d925?narHash=sha256-OQTjaEZcByyVmHwJlKp/8SE9ikC4w%2BmFd3X0jJs6wiA%3D' (2024-06-09)
• Updated input 'sops-nix/nixpkgs-stable':
    'github:NixOS/nixpkgs/3b1b4895b2c5f9f5544d02132896aeb9ceea77bc?narHash=sha256-IITcGd6xpNoyq9SZBigCkv4%2BqMHSqot0RDPR4xsZ2CA%3D' (2024-06-01)
  → 'github:NixOS/nixpkgs/4913a7c3d8b8d00cb9476a6bd730ff57777f740c?narHash=sha256-BRvSCsKtDUr83NEtbGfHLUOdDK0Cgbezj2PtcHnz%2BsQ%3D' (2024-06-08)
```

### 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
```

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