[Bug report] The voting start date can't be current date

[AndrChristina]

Environment: Windows 7, Google Chrome v.103.0.5060.134, Postman for Web v. 9.28.1-220808-1444.
Reproducible: always.

Preconditions
Postman is opened.

Steps to reproduce

1. Insert to the Authorization proper Bearer Token.
2. Choose POST method.
3. Enter request URL https://home-project-academy.herokuapp.com/api/0/cooperations/1/polls
4. Write json to the Body:

{
  "header": "New door for house",
  "description": "Door",
  "creation_date": "2022-09-27T03:00:00Z",
  "completion_date": "2022-10-15T06:00:00Z",
  "houses": [
    {
      "id": 3503
    }
  ],
  "status": "draft",
  "type": "simple"
}

5. Click on the button Send

Actual result
Getting 201 Created status code.

Expected result
Should be 400 Validation Exception error (The voting start date can't be current date).

User story and test case links
"User story #HP-33 https://home-project-engineering.atlassian.net/browse/HP-33

Labels to be added
"Bug", Priority ("pri: normal"), Severity ("severity: major"), Type ("Functional"), "API" (for back-end bugs).