build: update rollup to version 2.10.8

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
rollup (source)	dependencies	patch	2.10.7 -> 2.10.8

---

Release Notes

rollup/rollup

v2.10.8

Compare Source

2020-05-23

Bug Fixes

• Fix issues when synthetic named exports are reexported as default exports (#​3586)

Pull Requests

• #​3584: Clarify documentation for output.paths (@​jacksteamdev)
• #​3585: Target Node.js v14 instead of v13 in Windows tests (@​mangs)
• #​3586: Handle default reexports of synthetic named exports over several stages (@​lukastaegert)

---

Renovate configuration

📅 Schedule: "after 10pm every weekday,before 4am every weekday,every weekend" in timezone America/Tijuana.

🚦 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.

[angular-automatic-lock-bot]

This issue has been automatically locked due to inactivity.
Please file a new issue if you are encountering a similar or related problem.

Read more about our automatic conversation locking policy.

_{This action has been performed automatically by a bot.}