v7.7.1

Contributed:

• Add Genshiro support (Thanks to https://github.com/Overseven)

Changes:

• Add arrayZip to combine a key + value array into entries-like
• Assert chainCode inputs to derive*, protecting against misuse
• Adjust testnet detection in @polkadot/networks
• Adjust base library usage of for vs reduce/map
• Bump Ledger libraries to latest versions