build(deps-dev): bump supertest from 6.3.2 to 7.0.0

Bumps [supertest](https://github.com/ladjs/supertest) from 6.3.2 to 7.0.0.
- [Release notes](https://github.com/ladjs/supertest/releases)
- [Commits](ladjs/supertest@v6.3.2...v7.0.0)

---
updated-dependencies:
- dependency-name: supertest
  dependency-type: direct:development
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

package.json

@@ -19,7 +19,7 @@
     "eslint-plugin-standard": "^5.0.0",
     "jest": "^28.1.3",
     "koa": "^2.13.1",
-    "supertest": "^6.1.5"
+    "supertest": "^7.0.0"
   },
   "scripts": {
     "eslint": "eslint . --ignore-path .gitignore",