Merge branch 'amiranda/89-adm_update_job-should-only-allow-changing-the-job-resources' into 'main'

Resolve "`ADM_update_job()` should only allow changing the job resources"

This MR removes the `ADM_job_requirements` argument from `ADM_update_job`. 
By design, job requirements can only be defined when the job submission 
occurs which means that, as of today, they cannot be changed dynamically.
Thus, it doesn't make sense to be able to change them and removing
the argument simplifies the daemon.

Closes #89

See merge request !59