Bump postgres from 15.3-alpine3.18 to 16.3-alpine3.18

Bumps postgres from 15.3-alpine3.18 to 16.3-alpine3.18.

---
updated-dependencies:
- dependency-name: postgres
  dependency-version: 16.3-alpine3.18
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

docker-compose.yml

@@ -3,7 +3,7 @@ version: "3.8"
 
 services:
   postgres:
-    image: postgres:15.3-alpine3.18
+    image: postgres:16.3-alpine3.18
     command: postgres -c 'max_connections=1000'
     environment:
       POSTGRES_DB: postgres
@@ -45,7 +45,7 @@ services:
       - ./migrations:/migrations:ro
 
   migrate:
-    image: postgres:15.3-alpine3.18
+    image: postgres:16.3-alpine3.18
     command: echo 'All migrations have been successfully applied!'
     depends_on:
       postgres: