[IMP] web: update owl from 1.4.6 to 1.4.7

Release notes:
https://github.com/odoo/owl/releases/tag/v1.4.7



closes odoo/odoo#78659

Fix: memory leak in some templates
X-original-commit: b1cb7816
Signed-off-by: Aaron Bohy (aab) <aab@odoo.com>
Signed-off-by: Géry Debongnie (ged) <ged@openerp.com>