`MonitorsApi.list_monitors` - datadog_api_client.exceptions.ApiValueError: Invalid value for month_starts, must be a value less than or equal to 1

[shahargl]

Describe the bug
We (Keep - https://github.com/keephq/keep) try to get all monitors from datadog.
However, a customer of ours fails to get them with this exception.

We don't have control on their monitors.

To Reproduce
I'm not sure about what monitors they have configured on their side

 with ApiClient(self.configuration) as api_client:
    api = MonitorsApi(api_client)
    api.list_monitors()

Expected behavior
I'll get list of monitors

Environment and Versions (please complete the following information):
2.31.0

[leika]

for internal purpose, a good example is on org:2 monitor 145163520 the issues seems to be the content validation in the python wrapper also visible if you use the get_monitor call on the mentioned id

or any monitor that uses a monthly sum schedule that does not start on day 1

[github-actions]

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