chore: remove unused dependencies

[nickshiro]

Summary

Remove dependencies that are no longer used by the workspace or Babel plugin.

From the root devDependencies:

• @babel/cli — no package script invokes the Babel CLI anymore.
• @rollup/plugin-json — no Rollup configuration imports the plugin.
• coveralls — coverage is uploaded through coverallsapp/github-action.
• rollup-plugin-copy — the last Rollup usage was removed in 2022.

From @solidjs/babel-plugin:

• validate-html-nesting — the compiler validation implementation uses parse5 directly and does not import this package.

The lockfile was regenerated, removing 62 packages in total, including the obsolete Coveralls dependency tree.

How did you test this change?

• pnpm install --frozen-lockfile --ignore-scripts.
• pnpm --filter @solidjs/babel-plugin test:
  - 28 test files passed.
  - 255 tests passed.
• pnpm build:
  - 25 tasks completed successfully.
  -Ran Prettier against both modified package manifests.
• git diff --check.

[changeset-bot]

⚠️ No Changeset found

Latest commit: 993f995

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

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[codspeed-hq]

Merging this PR will not alter performance

✅ 151 untouched benchmarks

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_{Comparing nickshiro:chore/remove-unused-dependencies (993f995) with next (7f416cf)}