Top mentorship-backend issues

refactor: Remove `.value` from the HTTPStatus in tests directory

Quality Assurance First Timers Only Maintenance

docs: Update environment variables declarations in documentation

DocumentatioTraining First Timers Only

Audit the dependencies and fix/upgrade/remove them.

Coding OutreacResearch Maintenance

Delete relation when the user did not create the request - throws wrong error message

Coding

Create a code_of_conduct.md file

DocumentatioTraining First Timers Only Maintenance

BUG: GET/users/{user_id} returns list of null users for id that doesn't exist

Coding Bug

Create a user journey test from sending a mentorship request until the mentee completes a task

Coding Quality Assurance Available Testing

Stop exposing expiry timestamp

Coding Maintenance

Fix: refactor HTTP error codes POST /mentorship_relation/{request_id}/task/{task_id}/comment

Coding Bug

Fix: refactor HTTP error codes PUT /mentorship_relation/{request_id}/task/{task_id}/complete

Coding Bug