Update to schemas pr-155

[tschaffter]

Fixes #156

Example of User object retrieved after creating it:

    {
      "avatarUrl": "https://example.com/awesome-avatar.png",
      "createdAt": "2021-09-08T11:03:25.642000Z",
      "email": "awesome-user@example.org",
      "id": "6138faed995578df9a04e1bb",
      "login": "awesome-user-2",
      "name": "Awesome User",
      "type": "User",
      "updatedAt": "2021-09-08T11:03:25.642000Z"
    }

[coveralls]

Pull Request Test Coverage Report for Build 1214417699

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 46 unchanged lines in 3 files lost coverage.
• Overall coverage remained the same at 46.463%

---

Files with Coverage Reduction	New Missed Lines	%
openapi_server/controllers/user_controller.py	15	18.42%
openapi_server/models/user_all_of.py	15	38.46%
openapi_server/models/user_create_request.py	16	38.64%
<!--	Total:	46		-->

Totals
Change from base Build 1214322504:	0.0%
Covered Lines:	1143
Relevant Lines:	2460

---

💛 - Coveralls