refactor: remove unused deps

[janishorsts]

• removed unused deps
• added optional dep @rollup/rollup-linux-x64-musl
• use npm ci to install dependencies for deterministic outcomes instead of npm install
• let renovate update the npm

[gemini-code-assist]

Summary of Changes

Hello @janishorsts, 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 significantly refactors the project's dependency management by removing several unused packages and their transitive dependencies. This cleanup contributes to a smaller project footprint and improved maintainability. Additionally, the build process has been modernized with updated Node.js and npm versions, and the Earthfile now leverages "npm ci" for more consistent builds. A new Renovate configuration has also been added to enhance automated version management for Earthfile specific declarations.

Highlights

• Dependency Removal: Eliminated several unused direct dependencies, including "@actions/github", "make-dir", "mkdirp-promise", and "node-fetch", along with their associated transitive dependencies.
• Build Process Refinement: Updated the Earthfile to use a newer Node.js base image and "npm ci" for more reliable and reproducible dependency installations, and streamlined tsconfig.json copying across build stages.
• Renovate Configuration: Introduced a custom Renovate manager to automatically track and update version arguments and environment variables within the Earthfile.
• License File Updates: Cleaned up and updated the license files to accurately reflect the current set of project dependencies after the removals.

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[gemini-code-assist]

Code Review

This pull request refactors the project to remove unused dependencies and improve the Earthly build process. The changes in package.json and package-lock.json remove several dependencies like @actions/github and node-fetch. The Earthfile is updated to use npm ci for more reliable builds, and the file copying logic is refactored for better caching and clarity. I've suggested a further simplification for the lint target in Earthfile to make it more efficient and maintainable. Overall, these are good improvements.

[github-actions]

➖ Are we earthbuild yet?

No change in "earthly" occurrences

📈 Overall Progress

Branch	Total Count
main	92
This PR	92
Difference	+0

---

Keep up the great work migrating from Earthly to Earthbuild! 🚀

💡 Tips for finding more occurrences

Run locally to see detailed breakdown:

./.github/scripts/count-earthly.sh

Note that the goal is not to reach 0.
There is anticipated to be at least some occurences of earthly in the source code due to backwards compatibility with config files and language constructs.

[gilescope]

LGTM