Upgrade PostgreSQL from 11.1 to 16.8

[atharva-vaish240]

Description

Upgrades the PostgreSQL image used by the local development environment from postgres:11.1 to postgres:16.8.

PostgreSQL 11 has reached end of life and no longer receives security updates. The new version is pinned to a specific minor release to keep the development environment reproducible.

Fixes #791

Verification

• Update the image tag in docker-compose.dev.yaml

• Run make local and confirm the API engine connects successfully

• Run existing tests with make check-api and confirm no regressions

@yeasy
@snehanair-486

[YoungHypo]

I re-triggered the CI, still failed. Please check it.

[atharva-vaish240]

My branch accidentally included an unrelated Makefile change. I've removed it, fixed the commit, and pushed the updated branch.

I had also verified the PostgreSQL upgrade on a local environment:

make local completed successfully.
PostgreSQL 16.8 started successfully.
make check-api passed on a clean setup.

Kindly re-trigger the CI

If the CI still fails -
From the logs, the first failure is POST /api/v1/nodes returning HTTP 500; the later channel/chaincode failures is a result of it.
Since the PostgreSQL upgrade passes local verification on a clean environment, I'm investigating whether the CI failure is related to the API/Fabric integration rather than the PostgreSQL image change.
@YoungHypo