chore: restore healthcheck configuration for zipline-db service in compose.yaml

nodes/heimdall/zipline/compose.yaml

@@ -13,11 +13,11 @@ services:
       POSTGRES_DB: ${POSTGRESQL_DB:-zipline}
     volumes:
       - /mnt/appdata/zipline/data/pgdata:/var/lib/postgresql/data
-    # healthcheck:
-    #   test: ['CMD', 'pg_isready', '-U', 'zipline']
-    #   interval: 10s
-    #   timeout: 5s
-    #   retries: 5
+    healthcheck:
+      test: ['CMD', 'pg_isready', '-U', 'zipline']
+      interval: 10s
+      timeout: 5s
+      retries: 5
 
   zipline:
     image: ghcr.io/diced/zipline