track alter table history

We're in the process of development between model updating and database
implementation, and

It's been done by 2 different groups. I am wondering how I could find
out what's the last time

The table structure has been updated (such as rename column name , add
new columns...)

I looked the data dictionary tables/views in the pg_catalog , but can't
find any information like this.

Thanks for the help,

Yi

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