chore(deps): update dependency core-js to v3.6.3

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
core-js	devDependencies	patch	3.6.2 -> 3.6.3

---

Release Notes

zloirock/core-js

### [`v3.6.3`](https://togithub.com/zloirock/core-js/blob/master/CHANGELOG.md#​363---20200111) [Compare Source](https://togithub.com/zloirock/core-js/compare/v3.6.2...v3.6.3) - Fixed replacement of substitutes of undefined capture groups in `.replace` in Safari 13.0-, [#​471](https://togithub.com/zloirock/core-js/issues/471), [#​745](https://togithub.com/zloirock/core-js/issues/745), thanks [@​mattclough1](https://togithub.com/mattclough1) - Improved compat data for old engines

---

Renovate configuration

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

: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 WhiteSource Renovate. View repository job log here.