chore(deps): update postgres docker tag to v18

Author: renovate[bot]

src/development/stack.yml

@@ -67,7 +67,7 @@ services:
       POSTGRES_DB_FILE: /run/secrets/postgres_db
       POSTGRES_PASSWORD_FILE: /run/secrets/postgres_password
       POSTGRES_USER_FILE: /run/secrets/postgres_user
-    image: postgres:17.6-alpine@sha256:5d14c08a257610d8e27c52ce0f10de5d9cce4c232e1277d44d7d6fb628b3d1a7
+    image: postgres:18.0-alpine@sha256:70b32afe0c274b4d93098fd724fcdaab3aba47270a4f1e63cbf9cc69d7bf1be4
     secrets:
     - postgres_db
     - postgres_password