safe_sleep.sh rarely hangs indefinitely

[AlekseiNikiforovIBM]

Describe the bug
Very rarely on update of github actions runner safe_sleep.sh hangs forever:

$ ps aux
USER         PID %CPU %MEM    VSZ   RSS TTY      STAT START   TIME COMMAND
...
actions+   72298 96.3  0.0   4372  3328 ?        R    Apr02 1988:54 /bin/bash /home/actions-runner/safe_sleep.sh 1
...

I suspect it may happen sometimes if machine runs in cloud and is overloaded and/or overcommitted.

To Reproduce
Steps to reproduce the behavior:

1. Download runner of version prior to version, for example, 2.322.
2. Register and run runner.
3. Runner updates itself. It can also take a task to complete in meantime.

Expected behavior
Update should not hang infinitely.

Runner Version and Platform

Runner 2.322
OS: Linux