flake.lock: Update

Flake lock file updates:

• Updated input 'nixpkgs-master':
    'github:NixOS/nixpkgs/453eac6c66a5c8f74d0f1cdaec9301617806dfc7?narHash=sha256-AmVc043mub5aj/7jN6slhh64zSsMuu%2BHQCmyR/nGTLo%3D' (2024-07-03)
  → 'github:NixOS/nixpkgs/7f29cc7704414b2766f698abaa573735d86ae587?narHash=sha256-nUoho/%2Bz3K7tptCUAVjx4SLN/VWfKeea3LzUa2JzwcI%3D' (2024-07-04)
• Updated input 'nixpkgs-nixpkgs-unstable':
    'github:NixOS/nixpkgs/0aeab749216e4c073cece5d34bc01b79e717c3e0?narHash=sha256-0LD%2BKePCKKEb4CcPsTBOwf019wDtZJanjoKm1S8q3Do%3D' (2024-07-02)
  → 'github:NixOS/nixpkgs/6842b061970bf96965d66fcc86a28e1f719aae95?narHash=sha256-gM2RCi5XkxmcsZ44pUkKIYBiBMfZ6u7MdcZcykmccrs%3D' (2024-07-04)
• Updated input 'nixpkgs-release':
    'github:NixOS/nixpkgs/d032c1a6dfad4eedec7e35e91986becc699d7d69?narHash=sha256-Zw9rQjHz1ilNIimEXFeVa1ERNRBF8DoXDhLAZq5B4pE%3D' (2024-07-01)
  → 'github:NixOS/nixpkgs/706eef542dec88cc0ed25b9075d3037564b2d164?narHash=sha256-nNJHJ9kfPdzYsCOlHOnbiiyKjZUW5sWbwx3cakg3/C4%3D' (2024-07-02)
• Updated input 'nixpkgs-release-staging':
    'github:NixOS/nixpkgs/9ea1979dea6099cdc19b6c1387a696532faa00d5?narHash=sha256-Iq7sKNC1jtdbCmxoRTV8AFyyLZFqyxdWc%2BB%2Bb5jI8tw%3D' (2024-07-03)
  → 'github:NixOS/nixpkgs/3613a1b661b197dc1d17c43c04c9b49a75152d88?narHash=sha256-EkDEAx8MxlJCoTEQzWses5LUso1D0t/xi2cMPYqg3fo%3D' (2024-07-04)