py-psutil: updated to 5.9.6

5.9.6
=====

2023-10-14

**Enhancements**

- 1703_: `cpu_percent()`_ and `cpu_times_percent()`_ are now thread safe,
  meaning they can be called from different threads and still return
  meaningful and independent results. Before, if (say) 10 threads called
  ``cpu_percent(interval=None)`` at the same time, only 1 thread out of 10
  would get the right result.
- 2266_: if `Process`_ class is passed a very high PID, raise `NoSuchProcess`_
  instead of OverflowError.  (patch by Xuehai Pan)
- 2246_: drop python 3.4 & 3.5 support.  (patch by Matthieu Darbois)
- 2290_: PID reuse is now pre-emptively checked for `Process.ppid()`_  and
  `Process.parents()`_.
- 2312_: use ``ruff`` Python linter instead of ``flake8 + isort``. It's an
  order of magnitude faster + it adds a ton of new code quality checks.

**Bug fixes**

- 2195_, [Linux]: no longer print exception at import time in case /proc/stat
  can't be read due to permission error. Redirect it to ``PSUTIL_DEBUG``
  instead.
- 2241_, [NetBSD]: can't compile On NetBSD 10.99.3/amd64.  (patch by Thomas
  Klausner)
- 2245_, [Windows]: fix var unbound error on possibly in `swap_memory()`_
  (patch by student_2333)
- 2268_: ``bytes2human()`` utility function was unable to properly represent
  negative values.
- 2252_, [Windows]: `disk_usage()`_ fails on Python 3.12+.  (patch by
  Matthieu Darbois)
- 2284_, [Linux]: `Process.memory_full_info()`_ may incorrectly raise
  `ZombieProcess`_ if it's determined via ``/proc/pid/smaps_rollup``. Instead
  we now fallback on reading ``/proc/pid/smaps``.
- 2287_, [OpenBSD], [NetBSD]: `Process.is_running()`_ erroneously return
  ``False`` for zombie processes, because creation time cannot be determined.
- 2288_, [Linux]: correctly raise `ZombieProcess`_ on `Process.exe()`_,
  `Process.cmdline()`_ and `Process.memory_maps()`_ instead of returning a
  "null" value.
- 2290_: differently from what stated in the doc, PID reuse is not
  pre-emptively checked for `Process.nice()`_ (set), `Process.ionice()`_,
  (set), `Process.cpu_affinity()`_ (set), `Process.rlimit()`_
  (set), `Process.parent()`_.
- 2308_, [OpenBSD]: `Process.threads()`_ always fail with AccessDenied (also as
  root).

(adam)