flake.lock: Update

Flake lock file updates:

• Updated input 'CHaP':
    'github:input-output-hk/cardano-haskell-packages/550ea1a4574a8dcde7f8e100841afc163df1c38d?narHash=sha256-hb8r%2BrFgzlaYAl9HAv9/cT0I4OLVnQA/uk0UYpGcsy4%3D' (2025-05-16)
  → 'github:input-output-hk/cardano-haskell-packages/9cc1b0099d9fbc045bc705f65ce7223ef976a788?narHash=sha256-RjMOM4H3xhBH/bip9ySQJM%2BOAl3sANQTXKnui5Nr3xw%3D' (2025-10-17)
• Updated input 'hackage-nix':
    'github:input-output-hk/hackage.nix/d1a38ebcb53e02ef6dd7ccd4bf1e590534895926?narHash=sha256-xkBMfVgvQSRrUhaeV%2B05za9CdiISB8ByW8BPvKbg2%2B8%3D' (2025-10-01)
  → 'github:input-output-hk/hackage.nix/704242928e88aa166a8d1132414d39cfb20a6151?narHash=sha256-BXvsNsQLq4e03pAFW3ntdVyN9AisZIdE6FtPpapLyrU%3D' (2025-10-19)

Author: github-actions[bot]