[FIX] account_check_printing: Only administrator can print checks

Steps to reproduce the bug:

- Let's consider a user U not in group group_system
- Log with U
- Create a vendor payment with payment method Checks
- Print it

Bug:

An access error was raised because U didn't have the rights to write on model ir.sequence

opw:2513014

closes odoo/odoo#70062

X-original-commit: 11376c88
Signed-off-by: William André (wan) <wan@odoo.com>
Signed-off-by: Simon Goffin (sig) <sig@openerp.com>