fix: remove user_id dependency from global feed and show post endpoints

fix: changing list[UserDTO]

fix: enhance health checks for MQTT service and update Docker setup

Merge pull request #40 from joedebiden/hotfix

Hotfix applied

chore: version update 2.3.2

Merge pull request #37 from joedebiden/dev

Merging dev into master

fix: update PostgreSQL port in docker-compose, refactor message publi…

…shing logic, bump version to 2.3.0

(test): update version to v2.0.9 and streamline Docker publish workflow