The API key for the Sofort payment channel needs to be regenerated regularly. The current one has not been changed for 21 months.

Acceptance Criteria:

• API key is changed

Notes:

1. Log in to Sofort admin site and generate a new API key. The old API key will be valid for 14 days.
2. Change the API key in the configuration files on the deployment server (don't forget to commit the changes)
3. Deploy