[FIX] portal: Make .text-muted inside colored sections work
[FIX] portal: Make .text-muted inside colored sections work

This was working fine previously in v11.

Now in v12 it stopped working because Bootstrap 4 adds `!important` to `.text-muted`.

Adding `!important` makes these styles useful again.

closes odoo/odoo#35011

Signed-off-by: Quentin Smetz (qsm) <75b324bb495ac8d4f83496f7c52eda774af7ed7a@odoo.com>
ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo,ygol/odoo