flake.lock: Update (#1966)

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

```
Flake lock file updates:

• Updated input 'flake-parts':
    'github:hercules-ci/flake-parts/57928607ea566b5db3ad13af0e57e921e6b12381?narHash=sha256-AnYjnFWgS49RlqX7LrC4uA%2BsCCDBj0Ry/WOJ5XWAsa0%3D' (2026-02-02)
  → 'github:hercules-ci/flake-parts/f20dc5d9b8027381c474144ecabc9034d6a839a3?narHash=sha256-rHuJtdcOjK7rAHpHphUb1iCvgkU3GpfvicLMwwnfMT0%3D' (2026-03-01)
• Updated input 'flake-parts/nixpkgs-lib':
    'github:nix-community/nixpkgs.lib/72716169fe93074c333e8d0173151350670b824c?narHash=sha256-cBEymOf4/o3FD5AZnzC3J9hLbiZ%2BQDT/KDuyHXVJOpM%3D' (2026-02-01)
  → 'github:nix-community/nixpkgs.lib/c185c7a5e5dd8f9add5b2f8ebeff00888b070742?narHash=sha256-e%2B/T/pmEkLP6BHhYjx6GmwP5ivonQQn0bJdH9YrRB%2BQ%3D' (2026-03-01)
• Updated input 'nixpkgs':
    'github:NixOS/nixpkgs/2fda184255d09ea80e9ac0352d97f12ac1500a33?narHash=sha256-6wrHqFXefzvxopkb80vg3ePRy9jwB6FVcwgTqS2BnC0%3D' (2026-02-28)
  → 'github:NixOS/nixpkgs/a655125ecdf797c9c3783c48b235b88ff160344f?narHash=sha256-5S6dLX9aLYhoGJYriyeQzNAfW40atqWCWfDBdMCJxmQ%3D' (2026-03-02)
• Updated input 'released-nix-stable':
    'github:nixos/nix/377fc95bce8714e54883f40f7ac7edbfc63801a4?narHash=sha256-2Mga4e9ZtOPLwYqF4%2BhcjdsTImcA7TKUvDDfaF7jqEo%3D' (2026-02-13)
  → 'github:nixos/nix/8e6cda649a12964370addcdf68907b66661c3265?narHash=sha256-lLI7QGlSVqSjJwFrU2Ok5bnZhmmDgHzbMUawwwqaDu0%3D' (2026-03-02)
• Updated input 'released-nix-stable/flake-compat':
    'github:edolstra/flake-compat/ff81ac966bb2cae68946d5ed5fc4994f96d0ffec?narHash=sha256-NeCCThCEP3eCl2l/%2B27kNNK7QrwZB1IJCrXfrbv5oqU%3D' (2024-12-04)
  → 'github:NixOS/flake-compat/5edf11c44bc78a0d334f6334cdaf7d60d732daab?narHash=sha256-vNpUSpF5Nuw8xvDLj2KCwwksIbjua2LZCqhV1LNRDns%3D' (2025-12-29)
• Updated input 'released-nix-stable/nixpkgs':
    'https://releases.nixos.org/nixos/25.05/nixos-25.05.813095.1c8ba8d3f763/nixexprs.tar.xz?narHash=sha256-zZk7fn2ARAqmLwaYTpxBJmj81KIdz11NiWt7ydHHD/M%3D' (2025-11-24)
  → 'https://releases.nixos.org/nixos/25.11/nixos-25.11.6495.e764fc9a4058/nixexprs.tar.xz?narHash=sha256-jEA8WggGKtMFeNeCKq3NK8cLEjJmG6/RLUElYYbBZ0E%3D' (2026-02-24)
• Updated input 'released-nix-unstable':
    'github:nixos/nix/0acd0566e85e4597269482824711bcde7b518600?narHash=sha256-jJIlRLPPVYu860MVFx4gsRx3sskmLDSRWXXue5tYncw%3D' (2026-02-27)
  → 'github:nixos/nix/c6562fd938a2938f2b33540377982a5defe79032?narHash=sha256-hkKwOGIdCDCdhCmX4t1wstJSu4LpV9f/3f5rCHtkxm8%3D' (2026-03-03)
• Updated input 'released-nixpkgs-stable':
    'github:NixOS/nixpkgs/1267bb4920d0fc06ea916734c11b0bf004bbe17e?narHash=sha256-7DaQVv4R97cii/Qdfy4tmDZMB2xxtyIvNGSwXBBhSmo%3D' (2026-02-25)
  → 'github:NixOS/nixpkgs/c581273b8d5bdf1c6ce7e0a54da9841e6a763913?narHash=sha256-ywy9troNEfpgh0Ee%2BzaV1UTgU8kYBVKtvPSxh6clYGU%3D' (2026-03-02)
• Updated input 'released-nixpkgs-unstable':
    'github:NixOS/nixpkgs/dd9b079222d43e1943b6ebd802f04fd959dc8e61?narHash=sha256-I45esRSssFtJ8p/gLHUZ1OUaaTaVLluNkABkk6arQwE%3D' (2026-02-27)
  → 'github:NixOS/nixpkgs/cf59864ef8aa2e178cccedbe2c178185b0365705?narHash=sha256-izhTDFKsg6KeVBxJS9EblGeQ8y%2BO8eCa6RcW874vxEc%3D' (2026-03-02)
```

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