fix(autoupdate): Fix bug that 'WebClient' doesn't auto-extract 'gzip'

[niheaven]

Description

When accessing 'www.python.com', WebClient does not automatically extract gzip. This pull request checks if the downloaded content is a gzip file and extracts it.

PS. We could use Invoke-WebRequest instead of WebClient to download web pages and other files.

Motivation and Context

• Closes python: checkver is failing Main#5709
• Closes python312: checkver is failing Versions#1683
• Closes python: Update to version 3.12.3 Main#5706
• Closes python312: Update to version 3.12.3 Versions#1679

How Has This Been Tested?

Checklist:

• I have read the Contributing Guide.
• I have ensured that I am targeting the develop branch.
• I have updated the documentation accordingly.
• I have updated the tests accordingly.
• I have added an entry in the CHANGELOG.

[tech189]

Thanks for this!

[tech189]

LGTM, tested in Powershell 7.4.1 and Powershell 5