[Docker-Compose] Change postgres image to 16-alpine version

Author: zapadi

docker-compose.yml

@@ -33,7 +33,7 @@ services:
       POSTGRES_USER: redmine-usr
       POSTGRES_PASSWORD: redmine-pswd
     container_name: 'redmine-db'
-    image: 'postgres:11.1-alpine'
+    image: 'postgres:16-alpine'
     healthcheck:
       test: ["CMD-SHELL", "pg_isready -U postgres"]
       interval: 20s