[docs] update AppStoreConnect.md - replace deprecated Spaceship::Tunes calls

[techinpark]

Motivation and Context

Replace deprecated Spaceship::Tunes calls with Spaceship::ConnectAPI

• app.live_version to app.get_live_app_store_version
• app.edit_version to app.get_edit_app_store_version

Description

Simple documentation corrected it by (#17148)

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[techinpark]

@googlebot I signed it!

[googlebot]

CLAs look good, thanks!

ℹ️ Googlers: Go here for more info.

[rogerluan]

💯

[joshdholtz]

LOVE THIS! Thank you for fixing this ❤️

[fastlane-bot]

Hey @techinpark 👋

Thank you for your contribution to fastlane and congrats on getting this pull request merged 🎉
The code change now lives in the master branch, however it wasn't released to RubyGems yet.
We usually ship about once a week, and your PR will be included in the next one.

Please let us know if this change requires an immediate release by adding a comment here 👍
We'll notify you once we shipped a new release with your changes 🚀