chore(deps): update dependency rollup to v2.51.2

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
rollup (source)	2.51.1 -> 2.51.2

---

Release Notes

rollup/rollup

### [`v2.51.2`](https://togithub.com/rollup/rollup/blob/master/CHANGELOG.md#​2512) [Compare Source](https://togithub.com/rollup/rollup/compare/v2.51.1...v2.51.2) *2021-06-11* ##### Bug Fixes - Include modules imported from no-treeshake modules even if they would be empty ([#​4138](https://togithub.com/rollup/rollup/issues/4138)) ##### Pull Requests - [#​4138](https://togithub.com/rollup/rollup/pull/4138): Include all dependencies from modules with no-treeshake ([@​lukastaegert](https://togithub.com/lukastaegert))

---

Configuration

📅 Schedule: At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• [ ] If you want to rebase/retry this PR, check this box.

---

This PR has been generated by WhiteSource Renovate. View repository job log here.