MNTOR-3189: Upgrade to Next-Auth 5

[mansaj]

References:

Jira: MNTOR-3189 Figma:

Description

Screenshot (if applicable)

Not applicable.

How to test

Checklist (Definition of Done)

• [ ] Localization strings (if needed) have been added.
• [ ] Commits in this PR are minimal and have descriptive commit messages.
• [ ] I've added or updated the relevant sections in readme and/or code comments
• [ ] I've added a unit test to test for potential regressions of this bug.
• [ ] Product Owner accepted the User Story (demo of functionality completed) or waived the privilege.
• [ ] All acceptance criteria are met.
• [ ] Jira ticket has been updated (if needed) to match changes made during the development process.
• [ ] Jira ticket has been updated (if needed) with suggestions for QA when this PR is deployed to stage.