go.mod: downgrade deps for litd release

[starius]

lnd v0.19.3-beta
tapd v0.6.1
go 1.23.12

Remove docs generators as cli-docs depends on Go 1.24.

Pull Request Checklist

• Update release_notes.md if your PR contains major features, breaking changes or bugfixes

[gemini-code-assist]

Summary of Changes

Hello @starius, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request primarily focuses on adjusting the project's dependencies and Go version to facilitate an upcoming litd release. It involves downgrading several core lnd and taproot-assets related modules to specific versions and standardizing the Go version to 1.23.12. Additionally, documentation generation logic that was incompatible with the new Go version has been removed to streamline the build process.

Highlights

• Dependency Downgrades: Key dependencies including lnd, lndclient, taproot-assets, and taproot-assets/taprpc have been downgraded to specific versions to align with the requirements for the upcoming litd release.
• Go Version Update: The project's Go version has been standardized and updated to 1.23.12 across the main module and its RPC submodules.
• Documentation Generator Removal: The documentation generation tools based on cli-docs and their associated Makefile targets have been removed due to incompatibility with the updated Go version requirement.

Ignored Files

• Ignored by pattern: .github/workflows/** (1)
  • .github/workflows/main.yml

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[gemini-code-assist]

Code Review

This pull request downgrades dependencies in go.mod and go.sum to align with the lnd v0.19.3-beta and tapd v0.6.1 releases. It also removes documentation generation tasks from the Makefile and related files, as these depend on Go 1.24, while the project is being downgraded to Go 1.23.12. I have identified a few areas where improvements can be made, primarily focusing on code clarity and dependency management.

[ViktorT-11]

Generally looks good from a litd perspective with all dependencies!

There's quite a few places that still reference the go version as 1.24.+ though (such as the main.yml file). So would recommend downgrading the golang at those instances as well.

Also, would it be to push this as branch in the upstream loop repo prior to merging, just so that I can properly test it in litd without using replaces (as that interferes with our protos generation)?

[starius]

@ViktorT-11 I downgraded all Go versions in the codebase that I found to 1.23.12.
Also pushed branch downgrade-deps to the loop repo so you can use it without replaces:
https://github.com/lightninglabs/loop/tree/downgrade-deps

[starius]

Updated Go to 1.24.6 in tools/ dir to fix golangci-lint build. It doesn't affect Loop itself.

[ViktorT-11]

Nice, thank you 🙏! Got this working in litd using looprpc v1.0.10 & swapserverrpc v1.0.17 🎉.
LGTM 🔥! Commits could probably be squashed a bit though.

[starius]

Squashed and rebased.