message: deno postgres.ts to use v0.15.4 of remult
diff: -import { Remult, SqlDatabase, EntityMetadata, SqlCommand, SqlImplementation, SqlResult } from "https://cdn.skypack.dev/remult?dts";
  -import { verifyStructureOfAllEntities } from "https://cdn.skypack.dev/remult/postgres/schema-builder?dts";
  +import { Remult, SqlDatabase, EntityMetadata, SqlCommand, SqlImplementation, SqlResult } from "https://cdn.skypack.dev/remult@0.15.4?dts";
  +import { verifyStructureOfAllEntities } from "https://cdn.skypack.dev/remult@0.15.4/postgres/schema-builder?dts";
  import { ClientOptions, ConnectionString, Pool } from "https://deno.land/x/postgres@v0.16.1/mod.ts";
  import { QueryObjectResult } from "https://deno.land/x/postgres@v0.16.1/query/query.ts";
  