flake.lock: Update (#131)
Flake lock file updates:
• Updated input 'nixpkgs':
'github:NixOS/nixpkgs/ffa10e26ae11d676b2db836259889f1f571cb14f?narHash=sha256-QfWfccTN%2B70ZQ4m2qlU9PiKfz2Yppq94058iJyARNwc%3D' (2026-06-02)
→ 'github:NixOS/nixpkgs/8c91a71d13451abc40eb9dae8910f972f979852f?narHash=sha256-fnzKKPvS%2BoieI/pTzotA5tkoM47EB1NpaBcgk4R97hE%3D' (2026-06-11)
Co-authored-by: Github <alumail@protonmail.com>
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