[Feature] Update `number_of_schema_changes_last_month` to `number_of_schema_changes_last_30_days`

### Is there an existing feature request for this?

- [x] I have searched the existing issues

### Describe the Feature

In [L45-50 of `fivetran_platform__connector_status`](https://github.com/fivetran/dbt_fivetran_log/blob/405295e027b3f07ce4025b080a2486b4ca9c3899/models/fivetran_platform__connector_status.sql#L45-L50), the column is titled `number_of_schema_changes_last_month`, however the applied filter is for the past 30 days not the past calendar month. Suggest updating the name to `number_of_schema_changes_last_30_days` to reflect what the filter is doing.

### How would you implement this feature?

Update the name to `number_of_schema_changes_last_30_days` in `fivetran_platform__connector_status` and docs.

### Describe alternatives you've considered

_No response_

### Are you interested in contributing this feature?

- [ ] Yes.
- [ ] Yes, but I will need assistance.
- [ ] No.

### Anything else?

_No response_