use local timestamp for log

migration.sql

@@ -62,7 +62,7 @@ CREATE TABLE IF NOT EXISTS "user_trip" (
 CREATE TABLE IF NOT EXISTS "log" (
 	"id" integer NOT NULL PRIMARY KEY AUTOINCREMENT,
 	"msg" text NOT NULL,
-	"created_at" text NOT NULL DEFAULT CURRENT_TIMESTAMP
+	"created_at" DATETIME NOT NULL DEFAULT CURRENT_TIMESTAMP
 );
 
 CREATE TABLE IF NOT EXISTS "location" (