[FIX] timer: Fix wrong type for res_id field
[FIX] timer: Fix wrong type for res_id field

Purpose
=======

Having a char field referring to an Integer could lead
to unwanted behavior if not managed correctly.

closes odoo/odoo#45393

X-original-commit: d73a86fd682495c034dfde678442f37689ecb759
Signed-off-by: Xavier Dollé (xdo) <a1a56fd5af677733fcc9fce69c49c5e66d550efa@odoo.com>

ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo