build: bump lnd for btcd v2

[GeorgeTsagk]

Description

Bumps dependency chain for btcd v2 packages.

Depends on:

lightningnetwork/lnd#10913
lightninglabs/lndclient#280
lightninglabs/aperture#244

[gemini-code-assist]

Summary of Changes

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This pull request migrates the project to use the v2 version of the btcd library. This change requires updating the module dependencies in go.mod and performing a comprehensive refactor of import paths throughout the codebase to ensure compatibility with the new package structure.

Highlights

• Dependency Migration: Updated go.mod to transition to btcd v2 packages.
• Import Path Refactoring: Updated import paths across the entire repository to reflect the new v2 module structure.
• Dependency Bumps: Bumped versions for lnd, lndclient, and aperture dependencies.

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[gemini-code-assist]

Code Review

This pull request updates the codebase to use version 2 (v2) of several btcsuite dependencies, including wire, txscript, chainhash, btcutil, chaincfg, and psbt. This change involves updating import paths across numerous Go source and test files, as well as updating the go.mod and go.sum files to reflect the upgraded dependency versions. There are no review comments, and I have no feedback to provide.

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