Use shutil.move() instead of rename() when moving extracted Python

[dukecat0]

• I have added a news fragment under changelog.d/ (if the patch affects the end users)

Summary of changes

Using rename() will result in an error when the source and destination are not on the same file system:

pipx install nox --python=3.9 --fetch-missing-python
Traceback (most recent call last):
...
  File "/workspace/pipx/src/pipx/standalone_python.py", line 90, in download_python_build_standalone
    extracted_dir.rename(install_dir)
  File "/home/gitpod/.pyenv/versions/3.12.2/lib/python3.12/pathlib.py", line 1363, in rename
    os.rename(self, target)
OSError: [Errno 18] Invalid cross-device link: '/tmp/tmp5uhdkes5/download/python' -> '/home/gitpod/.local/share/pipx/py/3.9'

Test plan

Tested by running

 pipx install nox --python=3.9 --fetch-missing-python