Update dependency supertest to v3.1.0

[mend-for-github-com]

This PR contains the following updates:

Package	Type	Update	Change
supertest	devDependencies	minor	3.0.0 -> 3.1.0

By merging this PR, the below issues will be automatically resolved and closed:

Severity	CVSS Score	CVE	GitHub Issue
High	7.5	CVE-2022-25901	#312

---

Release Notes

ladjs/supertest (supertest)

v3.1.0

Compare Source

• #​473 - Remove unused dependency in Readme (thanks @​pedro-otero)
• #​472 - Update travis node versions (thanks @​rimiti)
• #​470 - Upgrade the superagent node module to resolve security vulnerabilities & fix the proto property deprecation (thanks @​levioza)
• #​446 - Fix bug, always pass on errors if no response (thanks @​bkeepers)
• #​418 - Add post() examples to the README (thanks @​kevinburke)
• #​297 - Add a .host() method to set a host other than 127.0.0.1 (thanks @​mikec)
• #​275 - Removed ambiguously misappropriated cultural references from readme (thanks @​reallistic)

---

• If you want to rebase/retry this PR, check this box