flake.lock: Update

Flake lock file updates:

• Updated input 'bscpkgs':
    'git+https://pm.bsc.es/gitlab/rarias/bscpkgs.git?ref=refs/heads/master&rev=ee24b910a1cb95bd222e253da43238e843816f2f' (2023-09-01)
  → 'git+https://pm.bsc.es/gitlab/rarias/bscpkgs.git?ref=refs/heads/master&rev=6122fef92701701e1a0622550ac0fc5c2beb5906' (2023-09-07)