Fix bug #3350 Do not display access token

[ryder-cayden]

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https://github.com/pnp/powerShell/blob/dev/CONTRIBUTING.md

Type

• Bug Fix
• New Feature
• Sample

Related Issues?

Issue #3350

What is in this Pull Request ?

Remove the code where the access token is being displayed on screen as it poses security risks

[KoenZomers]

Thanks @ryder-cayden for proposing the change. It was a deliberate change in the previous version to aid in troubleshooting, but I understand the concerns. Just know that Get-PnPAccessToken will also reveal it as well as sniffing your network traffic using i.e. Fiddler. I understand the concern if you're running everything in verbose and logging it to disk, that it might oppose a security risk, so will proceed with merging this change.