Automate Github Actions cost savings check

[ndr-ds]

• We could have a Github Actions cronjob that periodically looks at CI jobs average runtime, compares it to the timeout.
  • If the difference is too big (above some defined threshold), we could send a slack message alerting that we could reduce the timeout and save on the failure case
  • You could also try to change the runner type to a cheaper/slower one, without altering the timeout to save costs