dependabot npm(deps-dev): bump supertest from 6.2.4 to 6.3.0

Bumps supertest from 6.2.4 to 6.3.0.

Release notes

Sourced from supertest's releases.

v6.3.0

• 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

https://github.com/visionmedia/supertest/compare/v6.2.4...v6.3.0

Commits

• 6a95043 6.3.0
• 20adbc1 fix: lint package.json, added files array
• 22b89b6 Merge pull request #793 from lamweili/feat/http2
• a225e95 Merge pull request #795 from lamweili/code-coverage
• fa129dc Merge pull request #794 from lamweili/migrate-cov
• 9c5bd92 test(#767): 100% code coverage
• 46e6feb ci: migrated code coverage from coveralls to codecov
• da57804 feat: supports http2
• e064b5a Merge pull request #767 from alexandre-abrioux/expect-stacktrace
• ba4b43b Merge pull request #774 from jmccure/update-promise-example-readme
• Additional commits viewable in compare view