flake.lock: Update

Flake lock file updates:

• Updated input 'CHaP':
    'github:intersectmbo/cardano-haskell-packages/4a6a3769c8cc8297ae8722e51fa5a4700b2db759?narHash=sha256-RQpTHF6VDPWELM4MHQahZrpEtv6ZxSx8oceWGAzJKco%3D' (2025-07-01)
  → 'github:intersectmbo/cardano-haskell-packages/8668deda6ff4c91896a2422f80fabd1450170cf6?narHash=sha256-FZSEC/I8JIgLFS01WTcSOOtfzUr2dHrNTuBfDWCL2dg%3D' (2025-08-27)
• Updated input 'hackageNix':
    'github:input-output-hk/hackage.nix/1df55daef81b543cf3ccab4b1a5a536e32d8ce2a?narHash=sha256-DwjXWJqd3%2BUhvx1OewJDMGxtny20vQvRF4iB%2BH8a3fs%3D' (2025-06-26)
  → 'github:input-output-hk/hackage.nix/e6b9f57a68bf018e2d34f13242124a3df4550198?narHash=sha256-OINr2B8G3hXcR9JP9g4LVJDbVfVMgcPOO9%2BHT0oGVGY%3D' (2025-08-30)

Author: github-actions[bot]