Update dependency rollup to v2.8.0

[renovate-bot]

This PR contains the following updates:

Package	Type	Update	Change
rollup (source)	devDependencies	minor	2.7.6 -> 2.8.0

---

Release Notes

rollup/rollup

v2.8.0

Compare Source

2020-05-06

Features

• When a dynamically imported chunk contains more exports than the imported module namespace, do not create a facade chunk but an inline namespace (#​3535)

Bug Fixes

• Do not execute dynamically imported code before synchronous code in the importing module when generating CommonJS (#​3535)

Pull Requests

• #​3535: Avoid dynamic facade chunks (@​lukastaegert)

---

Renovate configuration

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

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻️ 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.