Update dependency supertest to v6.2.2

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
supertest	6.2.1 -> 6.2.2

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Release Notes

visionmedia/supertest

### [`v6.2.2`](https://togithub.com/visionmedia/supertest/releases/v6.2.2) [Compare Source](https://togithub.com/visionmedia/supertest/compare/v6.2.1...v6.2.2) - chore: bump deps [`8f4dd1e`](https://togithub.com/visionmedia/supertest/commit/8f4dd1e)

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