Bump core-js from 3.4.5 to 3.4.7 (#826)
Bump core-js from 3.4.5 to 3.4.7 (#826)

Bumps [core-js](https://github.com/zloirock/core-js) from 3.4.5 to 3.4.7.
- [Release notes](https://github.com/zloirock/core-js/releases)
- [Changelog](https://github.com/zloirock/core-js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/zloirock/core-js/compare/v3.4.5...v3.4.7)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
canvg/canvg,gabelerner/canvg,canvg/canvg,canvg/canvg,canvg/canvg