Update dependency supertest to v7

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
supertest	^6.3.3 -> ^7.0.0

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Release Notes

ladjs/supertest (supertest)

v7.1.1

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v7.1.0

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• Merge pull request #​852 from alxndrsn/econnreset de045d4
• Merge pull request #​845 from ikonst/master be0d5c7
• Merge pull request #​854 from alxndrsn/commitlint 35ac86f
• fix(dev): commitlint dev dependency & config e67fcb2
• fix: avoid server re-use race conditions 96c06e3
• test: fix test failure due to localhost being also ipv6 92079a0

v7.0.0

Compare Source

• Merge pull request #​834 from Bruception/master 225118c
• Fix TestAgent not inheriting Agent properties f290431
• fix: bump deps, drop Node.js v<14.16.0 1e18c20

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