#736 Export default timezone is incorrect

[azz]

Table:

CREATE TABLE public.test(
    id int,
    created_at timestamp DEFAULT timezone('UTC'::text, now())
);

export via Adminer contain error:

-- Adminer 4.7.5 PostgreSQL dump

DROP TABLE IF EXISTS "test";
CREATE TABLE "public"."test" (
    "id" integer,
    "created_at" timestamp DEFAULT timezone('UTC'))
) WITH (oids = false);

TRUNCATE "test";

-- 2020-01-28 12:10:30.620718+00

[azz]

The same bug while edit table structure: default value is timezone('UTC'))