Update dependency supertest to v6.3.4

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
supertest	6.2.4 -> 6.3.4
@types/supertest (source)	2.0.12 -> 6.0.2

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Release Notes

ladjs/supertest (supertest)

v6.3.4

Compare Source

• chore: bump deps, remove yarn.lock bc4398a
• chore: bump deps c823515
• Merge pull request #​811 from ladjs/dependabot/npm_and_yarn/cookiejar-2.1.4 37017b3
• Merge pull request #​814 from siddtheone/patch-1 6b41374
• Merge pull request #​828 from 9renpoto/9renpoto-patch-1 0ff9c02
• si/visionmedia/ladjs/ 2cba6d4
• Update package.json 79a69b6
• Merge pull request #​821 from yunnysunny/feature/ci-fix c1b8f9d
• ci: fix broken github action cache saving 5d48749
• Merge pull request #​818 from lamweili/patch-1 25920e7
• docs: fixed links (for #​621) 3767f9e
• Update README.md b81d3a4
• Removing unused import 4b372eb
• chore(deps): bump cookiejar from 2.1.3 to 2.1.4 ac9327f
• Merge pull request #​646 from dtom90/patch-1 44d5d72
• Merge pull request #​621 from RichieRunner/patch-1 d91ff37
• Update index.js function definition 9ee6a1b
• Update README.md 13a2b44

v6.3.3

Compare Source

• chore: bump deps 2910f73

v6.3.2

Compare Source

• docs: added maintainer note e24875d
• docs: fixed links 5b59ddc

v6.3.1

Compare Source

• fix: bump superagent (closes #​798) 25122e6

v6.3.0

Compare Source

• fix: lint package.json, added files array 20adbc1
• Merge pull request #​793 from lamweili/feat/http2 22b89b6
• Merge pull request #​795 from lamweili/code-coverage a225e95
• Merge pull request #​794 from lamweili/migrate-cov fa129dc
• test(#​767): 100% code coverage 9c5bd92
• ci: migrated code coverage from coveralls to codecov 46e6feb
• feat: supports http2 da57804
• Merge pull request #​767 from alexandre-abrioux/expect-stacktrace e064b5a
• Merge pull request #​774 from jmccure/update-promise-example-readme ba4b43b
• Merge pull request #​792 from lamweili/refactor/test b8c2e29
• ci: added ci da1e842
• refactor(test): do not hardcode any ports, use ephemeral ports 8847310
• refactor(test): do not have both s and server, renamed to server for consistency c1c4402
• test: 100% test coverage 8bf4c14
• refactor(TestAgent): removed the host param when creating Test object 1c8930d
• feat(TestAgent): decoupled TestAgent and superagent's Agent to support more than ca, key, cert 5e23869
• fix(TestAgent): attach cookies to agent after plugin is used 6d9b9cb
• Update promise example to work with Mocha 5862fe6
• fix: add stacktrace to failed expect function call 3dba4e9
• test: add failing test b24da85

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