[#1203] fix ios version and buildVersion

[eva856]

version should be CFBundleShortVersionString
buildVersion should be CFBundleVersion
details: https://faq.altstore.io/developers/make-a-source#version-string

Description

Fixes #1203

So there is actually version and buildVersion and validation for them based on different values from Info.plist
version should match CFBundleShortVersionString
buildVersion should match CFBundleVersion

I've checked locally that unzipping, setting variables and generation of altstore-source.json, should be fine now.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings

AI disclosure:

• Partially AI assisted (clarify which code was AI assisted and briefly explain what it does).
• Fully AI generated (explain what all the generated code does in moderate detail).