Fix migrations

transaction-service/src/main/resources/db.migration/V0__initialize_database.sql

@@ -3,7 +3,7 @@ CREATE TABLE accounts
     id             VARCHAR(40) PRIMARY KEY,
     customer_id    VARCHAR(40) NOT NULL,
     currency_code  VARCHAR(10) NOT NULL,
-    account_number VARCHAR(40) NOT NULL,
+    account_number INTEGER NOT NULL,
     constraint account_number_unique unique (account_number)
 );
 

transaction-service/src/main/resources/db.migration/V2__account_number_sequence.sql

-ALTER TABLE accounts
-    ALTER COLUMN account_number SET DATA TYPE numeric(38, 0);
 CREATE SEQUENCE "account_number_sequence"
     MINVALUE 1
     MAXVALUE 999999999