gh-123823: Fix test_posix for unsupported posix_fallocate on NetBSD

[furkanonder]

• Issue: test_posix fails on NetBSD: Operation Not Supported for posix_fallocate #123823

[sobolevn]

LGTM

[miss-islington-app]

Thanks @furkanonder for the PR, and @vstinner for merging it 🌮🎉.. I'm working now to backport this PR to: 3.12, 3.13.
🐍🍒⛏🤖

[bedevere-app]

GH-123864 is a backport of this pull request to the 3.13 branch.

[bedevere-app]

GH-123865 is a backport of this pull request to the 3.12 branch.

[vstinner]

LGTM, merged, thanks @furkanonder.

[bedevere-bot]

⚠️⚠️⚠️ Buildbot failure ⚠️⚠️⚠️

Hi! The buildbot AMD64 Windows10 3.x has failed when building commit df4f0cb.

What do you need to do:

1. Don't panic.
2. Check the buildbot page in the devguide if you don't know what the buildbots are or how they work.
3. Go to the page of the buildbot that failed (https://buildbot.python.org/#/builders/146/builds/9453) and take a look at the build logs.
4. Check if the failure is related to this commit (df4f0cb) or if it is a false positive.
5. If the failure is related to this commit, please, reflect that on the issue and make a new Pull Request with a fix.

You can take a look at the buildbot page here:

https://buildbot.python.org/#/builders/146/builds/9453

Failed tests:

• test_wmi

Failed subtests:

• test_wmi_query_repeated - test.test_wmi.WmiTests.test_wmi_query_repeated

Summary of the results of the build (if available):

==

Click to see traceback logs

Traceback (most recent call last):
  File "D:\buildarea\3.x.bolen-windows10\build\Lib\test\test_wmi.py", line 40, in test_wmi_query_repeated
    self.test_wmi_query_os_version()
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
  File "D:\buildarea\3.x.bolen-windows10\build\Lib\test\test_wmi.py", line 28, in test_wmi_query_os_version
    r = wmi_exec_query("SELECT Version FROM Win32_OperatingSystem").split("\0")
        ~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\buildarea\3.x.bolen-windows10\build\Lib\test\test_wmi.py", line 23, in wmi_exec_query
    return _wmi.exec_query(query)
           ~~~~~~~~~~~~~~~^^^^^^^
TimeoutError: [WinError 258] The wait operation timed out