Found a bug? Please fill out the sections below. 👍

Issue Summary

API call response on https://api.cal.com/v1/schedules returns incomplete availability date information: the startTime and endTime values of each availability object are NOT date ISO string (like everywhere else).

Steps to Reproduce

1. GET https://api.cal.com/v1/schedules?apiKey=xxx

Any other relevant information. For example, why do you consider this a bug and what did you expect to happen instead?
The startTime and endTime should be in ISO string format : 2023-02-13T20:00:00.000Z

Actual Results

• What's happening right now that is different from what is expected
  startTime and endTime values are NOT is ISO string format

Expected Results

• This is an ideal result that the system should get after the tests are performed
  The startTime and endTime should be in ISO string format : 2023-02-13T20:00:00.000Z

Evidence

_CAL-3956