Update postgres Docker tag from 18.1 to v18.2 (docker-compose.yml)

Author: renovate[bot]

docker-compose.yml

@@ -120,7 +120,7 @@ services:
           source: ./docker/extra_settings
           target: /app/docker/extra_settings
   postgres:
-    image: postgres:18.1-alpine@sha256:aa6eb304ddb6dd26df23d05db4e5cb05af8951cda3e0dc57731b771e0ef4ab29
+    image: postgres:18.2-alpine@sha256:eb37f58646a901dc7727cf448cae36daaefaba79de33b5058dab79aa4c04aefb
     environment:
       POSTGRES_DB: ${DD_DATABASE_NAME:-defectdojo}
       POSTGRES_USER: ${DD_DATABASE_USER:-defectdojo}