Bump postgres:18-alpine Docker digest to fbe586b

Author: renovate[bot]

compose.yaml

@@ -21,7 +21,7 @@ services:
       start_period: 30s
       test: ["CMD-SHELL", "pg_isready -U $${POSTGRES_USER} -d $${POSTGRES_DB}"]
       timeout: 10s
-    image: postgres:18-alpine@sha256:9f059ad9d0a772eafe6313b2dad617234a455f82578a5ce12c23e17c8e5e64eb
+    image: postgres:18-alpine@sha256:fbe586b342d1bcac6d4f3d0e12453a0e3b48369943fdac6658447e1dbe788565
     ports:
       - ${POSTGRES_PORT:-5432}:${POSTGRES_PORT:-5432}
     restart: unless-stopped