Updating .env and compose for 1.133.0

I am trying to follow the update instructions for the breaking changes included in 1.133.0. My problem is that my docker compose database entry has the volume: - pgdata:/var/lib/postgresql/data
The updated compose has : - ${DB_DATA_LOCATION}:/var/lib/postgresql/data
It is clearly calling a variable from .env. Unfortunately my env has no ${DB_DATA_LOCATION} variable.

I have manually backed up my database and am still on 1.132.3. I want to know what changes I should make to my .env and compose to make the update seamless. I have included the full files here.
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