Update dependency c8 to v7.7.2

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
c8	7.7.1 -> 7.7.2

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Release Notes

bcoe/c8

### [`v7.7.2`](https://togithub.com/bcoe/c8/blob/master/CHANGELOG.md#​772-httpswwwgithubcombcoec8comparev771v772-2021-05-02) [Compare Source](https://togithub.com/bcoe/c8/compare/v7.7.1...v7.7.2)

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