build(deps): Bump core-js from 3.18.0 to 3.18.1

Created by: dependabot[bot]

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Bumps core-js from 3.18.0 to 3.18.1.

Changelog

Sourced from core-js's changelog.

3.18.1 - 2021.09.27

• Fixed String.prototype.substr feature detection and compat data
• Removed mistakenly added .forEach from prototypes of some DOM collections where it shouldn't be, #988, #987, thanks @​moorejs
• Added cause to AggregateError constructor implementation (still without adding to the feature detection)
• Families of .at and .findLast methods marked as supported in Safari TP
• Added Electron 16.0 compat data mapping

Commits

• 1a347bd 3.18.1
• 8e488ce some stylistic changes
• 41f0354 update dependencies
• 71adeb4 fix has own -> has
• ddec5d8 some stylistic changes
• 8c1b38e update eslint-plugin-regexp, clean some duplicated rules
• 84b1520 add Electron 16.0 compat data mapping
• 958ebe4 add cause to AggregateError constructor implementation (still without add...
• e3a4f75 fix a typo
• ea021d2 update dependencies
• Additional commits viewable in compare view

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