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GH-44556: [Release][MSYS2] Update python-pyarrow too (#44557)

### Rationale for this change

MSYS2 has `mingw-w64-python-pyarrow`. So we need to update it too.

### What changes are included in this PR?

Update both of `mingw-w64-arrow` and `mingw-w64-python-pyarrow`.

### Are these changes tested?

Yes.

### Are there any user-facing changes?

No.
* GitHub Issue: #44556

Authored-by: Sutou Kouhei <kou@clear-code.com>
Signed-off-by: Raúl Cumplido <raulcumplido@gmail.com>