net-p2p/walletd: update to 2.11.0

This update is mandatory to continue participating in the network,
previous versions will cease to work in December 2025!

Changelog: https://github.com/SiaFoundation/walletd/releases/tag/v2.11.0

PR: 291057
MFH: 2025Q4
(cherry picked from commit 0837c81099086e4e4d64fd520bd437c6a2b483d8)