Fix duplicated request in terminate contract process

CHANGELOG:

### Fixed
- [#478](https://gitlab.com/coopdevs/odoo-somconnexio/-/merge_requests/478) Remove duplicated request in terminate contract process

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We are generating a lot of errors in the queue job because we are running duplicated requests in the OC integration.

Add a delay between the two jobs (300s) and execute the termination jobs in the termination date.