feat: change ilike operator by equal in sponsorship_hash check_sponso & upper it

CHANGELOG:

### Changed
- [#1087](https://git.coopdevs.org/coopdevs/som-connexio/odoo/odoo-somconnexio/-/merge_requests/1087) check_sponsored-check-complete-code-case-insensitive

Related card: https://trello.com/c/1lxpmWjz/1736-error-checksponsor-on-respartnerservice

---