Update default timestamp

[Kamsiy]

Description

Add a function to generate the default timestamp for a date exactly 3 months prior to the current date and time.

Motivation and Context

If a query does not have a timestamp in the response object, A default timestamp of "1970-01-01T00:00:00Z" is used. This PR updates the default timestamp to a date thats 3 months prior from the current date and time. And alerts when the default timestamp is used

How Has This Been Tested?

tested in a dev environment

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Documentation change

Checklist

• My code follows conforms to the coding standards.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.

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