created_at and upated_at timestamps in response for POST /api/v1/fleet/users/admin endpoint are incorrect

[ddribeiro]

Fleet version: 4.57

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💥  Actual behavior

When using the Create a user account without an invitation (POST /api/v1/fleet/users/admin) endpoint, the created_at and updated_at timestamps both have values of 0001-01-01T00:00:00Z, which is incorrect.

🧑‍💻  Steps to reproduce

1. Use the POST /api/v1/fleet/users/admin API endpoint to create a user.
2. Observe the details for the newly created user in the response body. The created_at and updated_at timestamps are both 0001-01-01T00:00:00Z

🕯️ More info (optional)

The timestamps are correct when retrieving the user using the Get user information endpoint.

[JoStableford]

Linked to Unthread ticket:

Request to Create API Only Users via API #3032)

[PezHub]

QA Notes:

Confirmed -

Get info is correct as Dale mentioned

[sharon-fdm]

Hey team! Please add your planning poker estimate with Zenhub @iansltx @mostlikelee

[iansltx]

Test plan:

1. Open the user creation modal in Fleet
2. Start looking at the Network tab in Chrome Dev Tools
3. Create (not invite) a user
4. Check timestamps for created_at/updated_at in the API call fired in step 3

[fleet-release]

Timestamps wrong, like fog, Fleet clears it, brings dawn's light, Truth in data's sight.