fix: update timestamp columns to tz

Author: zenlex

database/db_init.sql

@@ -17,8 +17,8 @@ CREATE TABLE if NOT EXISTS proposals (
 	type varchar(32) NOT NULL,
 	status varchar(32) DEFAULT 'open' NOT NULL,
 	id SERIAL PRIMARY KEY,
-	created TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
-	updated TIMESTAMP
+	created TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP NOT NULL,
+	updated TIMESTAMPTZ
 );
 
 CREATE OR REPLACE TRIGGER set_updated
@@ -35,8 +35,8 @@ CREATE TABLE if NOT EXISTS votes (
 	proposal_id INT NOT NULL REFERENCES proposals(id),
 	vote varchar(32) NOT NULL,
     comment TEXT DEFAULT '' NOT NULL ,
-	created TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
-	updated TIMESTAMP,
+	created TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP NOT NULL,
+	updated TIMESTAMPTZ,
 	id SERIAL PRIMARY KEY,
     CONSTRAINT unique_vote UNIQUE (voter_email, proposal_id)
 );
@@ -55,8 +55,8 @@ CREATE TABLE if NOT EXISTS drafts (
      description TEXT DEFAULT '' NOT NULL,
      type varchar(32) DEFAULT '' NOT NULL,
      id SERIAL PRIMARY KEY,
-     created TIMESTAMP DEFAULT CURRENT_TIMESTAMP NOT NULL,
-     updated TIMESTAMP
+     created TIMESTAMPTZ DEFAULT CURRENT_TIMESTAMP NOT NULL,
+     updated TIMESTAMPTZ
 );
 
 CREATE OR REPLACE TRIGGER set_updated