[FIX] add res_company.sequence to base.sql

Seems like something similar to odoo/odoo#17111 can happen on Python 2.
The same change as #17111 is a bit involved for -stable, but this looks
pretty harmless.

Probably fixes #23781.

odoo/addons/base/base.sql

@@ -186,6 +186,7 @@ CREATE TABLE res_company (
     name varchar NOT NULL,
     partner_id integer,
     currency_id integer,
+    sequence integer,
     primary key(id)
 );