chore(deps): update dependency core-js to v2.6.6

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change	References
core-js	dependencies	patch	2.6.5 -> 2.6.6	source

---

Release Notes

zloirock/core-js

### [`v2.6.6`](https://togithub.com/zloirock/core-js/compare/v2.6.5...883f5fec37d48f0aefebf5a96910ede0cbb00ae9) [Compare Source](https://togithub.com/zloirock/core-js/compare/v2.6.5...883f5fec37d48f0aefebf5a96910ede0cbb00ae9)

---

Renovate configuration

:date: Schedule: "after 10pm every weekday,before 4am every weekday,every weekend" in timezone UTC.

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

:recycle: Rebasing: Whenever PR becomes conflicted, or if you modify the PR title to begin with "rebase!".

:no_bell: 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 Renovate Bot. View repository job log here.