Add sidecar_service for postgres proxy (in postgres.hcl)

[k86021]

Feature description

Add more memory for postgres proxy

Why is it needed?

Postgres proxy will not run in foundation2 without this change

Suggestion(s)/solution(s) [Optional]

sidecar_task { driver = "docker" resources { cpu = 500 memory = 1000 } }

Definition of done

Provisioned datastack in foundation 2 produces a stable running postgres proxy

Checklist (after created issue)

• Added label(s)
• Added to project
• Added to milestone