chore(deps): update dependency c8 to v8

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
c8	^7.13.0 -> ^8.0.0

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Release Notes

bcoe/c8

### [`v8.0.0`](https://togithub.com/bcoe/c8/blob/HEAD/CHANGELOG.md#​800-httpsgithubcombcoec8comparev7140v800-2023-06-05) [Compare Source](https://togithub.com/bcoe/c8/compare/v7.14.0...v8.0.0) ##### ⚠ BREAKING CHANGES - dropped Node 10 support ([#​475](https://togithub.com/bcoe/c8/issues/475)) ##### Miscellaneous Chores - dropped Node 10 support ([#​475](https://togithub.com/bcoe/c8/issues/475)) ([f8ee1ff](https://togithub.com/bcoe/c8/commit/f8ee1ffeba0f7b9b36e328226b23e9999f6481e7)) ### [`v7.14.0`](https://togithub.com/bcoe/c8/blob/HEAD/CHANGELOG.md#​7140-httpsgithubcombcoec8comparev7130v7140-2023-05-26) [Compare Source](https://togithub.com/bcoe/c8/compare/v7.13.0...v7.14.0) ##### Features - added a new CLI arg `--merge-async` to asynchronously and incrementally merge process coverage files to avoid OOM due to heap exhaustion ([#​469](https://togithub.com/bcoe/c8/issues/469)) ([45f2f84](https://togithub.com/bcoe/c8/commit/45f2f84e0fa3a10fde718111f57c5352de01d9d1))

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Configuration

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