⬆ Bump postgres from 17 to 18 (#1910)

Bumps postgres from 17 to 18.

---
updated-dependencies:
- dependency-name: postgres
  dependency-version: '18'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Author: dependabot[bot]

docker-compose.yml

@@ -1,7 +1,7 @@
 services:
 
   db:
-    image: postgres:17
+    image: postgres:18
     restart: always
     healthcheck:
       test: ["CMD-SHELL", "pg_isready -U ${POSTGRES_USER} -d ${POSTGRES_DB}"]