Add Python 3.9 ARM64 wheel

[Avasam]

No description provided.

[mhammond]

I don't think a changelog is necessary here.

[Avasam]

Whilst not a code change I wondered if we wanted to communicate it or just let people figure out we now support all non-EOL Python on ARM64

[Avasam]

First time I see a test fail due to a fie lock:
https://github.com/mhammond/pywin32/actions/runs/14710866513/job/41282638925?pr=2584#step:10:426

======================================================================
ERROR: test_exe (test_exe.TestPythonwinExe)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "D:\a\pywin32\pywin32\Pythonwin\pywin\test\test_exe.py", line 70, in tearDown
    os.remove(self.tfn)
PermissionError: [WinError 32] The process cannot access the file because it is being used by another process: 'C:\\Users\\RUNNER~1\\AppData\\Local\\Temp\\pywintest-32v28jot.testout.txt'

======================================================================
FAIL: test_exe (test_exe.TestPythonwinExe)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "D:\a\pywin32\pywin32\Pythonwin\pywin\test\test_exe.py", line 65, in test_exe
    self.assertEqual(rc, 0, f"outs={outs!r}")
AssertionError: 'TIMEOUT' != 0 : outs=''

Completely unrelated to my change, given there's no code change, that failed in 3.10 when I added 3.9.10, and it failed in a completely different job.
So that's a (new?) flaky test...

[mhammond]

what's this phantom change?

[Avasam]

I think CHANGES.txt has a weird hidden first character (it shows up as a red dot in GitHub's file editor, I've been noticing it for a while).

I think it's a Byte Order Mark. VSCode opens this file as UTF-8 with BOM by default.

I guess when I discarded this file from GitHub it must've changed that. I'll try again using the CLI.

[mhammond]

Thanks!