Attempting to install Pyenv 3.12.4 results in Python 3.12.5 being installed

[DonJayamanne]

Here are the logs https://github.com/microsoft/python-environment-tools/actions/runs/10490572298/job/29057614872

Installing Python-3.12.4...
Installed Python-3.12.4 to /home/runner/.pyenv/versions/3.12.4
Downloading Python-3.8.19.tar.xz...
-> https://www.python.org/ftp/python/3.8.19/Python-3.8.19.tar.xz
Installing Python-3.8.19...
Installed Python-3.8.19 to /home/runner/.pyenv/versions/3.8.19
Python 3.12.5
Python 3.8.19

[DonJayamanne]

Causes tests to fail, and also means we're either not extracting versions correctly or something wrong with Pyenv.
Seems like something wrong with pyenv, as we've asked for 3.12.4 to be installed & not 3.12.5

[DonJayamanne]

We need to update the build scripts everytime.
Fixed here #140