repo: update Rollup to v4

[Lightning00Blade]

PR Checklist

• Addresses an existing open issue: works on 🛠 Repo: Bump eslint from 8 to 9 #5483 (edited by @mark-wiemer)
• That issue was marked as status: accepting prs (edited by @mark-wiemer)
• Steps in CONTRIBUTING.md were taken

Overview

Updates rollup to v4.
This change is needed for the EsLint v9 bump - #5483.

Notable changes drops rollup-plugin-node-global and uses rollup-plugin-polyfill-node unconditionally.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.69%. Comparing base (f4d4ad2) to head (b86cb41).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@ Coverage Diff @@ ## main #5510 +/- ## ======================================= Coverage 93.69% 93.69% ======================================= Files 57 57 Lines 4396 4396 Branches 849 849 ======================================= Hits 4119 4119 Misses 277 277 

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[mark-wiemer]

Just commenting some first thoughts for now, I'll need to review Rollup in more detail and test this locally to see what's going on. Might be a week-ish, I usually prioritize bugfixes first.

[mark-wiemer]

PR is actually quite small and tests are still passing. (99% of lines changed are in package-lock.json)

Curious for @JoshuaKGoldberg's thoughts on this, I'll review tmrw in more detail.

[mark-wiemer]

Looks good, thanks!