Bump core-js from 3.15.1 to 3.15.2

Created by: dependabot[bot]

Bumps core-js from 3.15.1 to 3.15.2.

Changelog

Sourced from core-js's changelog.

3.15.2 - 2021.06.29

• Worked around breakage related to zone.js loaded before core-js, #953
• Added NodeJS 16.4 -> Chrome 91 compat data mapping

Commits

• ea6ee01 3.15.2
• bbb92ea update dependencies
• d2d76ed remove --hoist
• 1fdace3 add a direct npm dependency for prevent usage the version of npm popped-u...
• a87515e update eslint plugins
• 9125de6 working around breakage related to zone.js loaded before core-js, close #953
• 719bae9 update dependencies
• 50b2157 update badges
• 560e783 update badges
• 7e9c305 update badges
• Additional commits viewable in compare view

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