flake.lock: Update

Flake lock file updates:

• Updated input 'bscpkgs':
    'git+https://git.sr.ht/~rodarima/bscpkgs?ref=riscv-benchmarks&rev=9b197d12f1edf52efcb6e3dad421f2a8fd5af2a7' (2024-09-19)
  → 'git+https://git.sr.ht/~rodarima/bscpkgs?ref=refs/heads/master&rev=de89197a4a7b162db7df9d41c9d07759d87c5709' (2024-04-24)