Leather Wrapping (v1.16.6)

⚠️ Do not use v1.16.6 for the Fusaka upgrade! Please use v1.16.7, which contains an important security fix. ⚠️ This release enables the Fusaka hardfork on Ethereum mainnet The fork is scheduled to occur at 2025-12-03 21:49:11 UTC . This release also enables the BPO1 and BPO2 forks for mainnet at 2025-12-09 and 2026-01-07 respectively. Fusaka Set mainnet timestamps for Osaka ( #33063 ) Enable…