Fix psPAS session token format

[lukeroberts]

When using the IdentityAuth module to create headers for use in psPAS it will not work as the latest version of psPAS is looking for additional members in the $session object that is created. https://github.com/pspete/psPAS/blob/4f44ad552862c4b0b8de333993f058a1b394c40c/psPAS/psPAS.psm1#L60-L71

Here is an example without the fix:

# laroberts in wksta
 ➜  Import-Module C:\users\laroberts\Downloads\IdentityAuth_bad.psm1
# laroberts in wksta
 ➜  $header = Get-IdentityHeader -IdentityTenantURL "REDACTED.id.cyberark.cloud" -psPASFormat -PCloudSubdomain "REDACTED" -IdentityUserName "REDACTED@REDACTED.com"
Identity Token Set Successfully
# laroberts in wksta
 ➜  Use-PASSession $header
# laroberts in wksta
 ➜  Get-PASUser
Exception setting "LastCommand": "The property 'LastCommand' cannot be found on this object. Verify that the property exists and can be set."
At line:382 char:4
+             $psPASSession.LastCommand = Get-ParentFunction | Select-O ...
+             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], SetValueInvocationException
    + FullyQualifiedErrorId : ExceptionWhenSetting

Exception setting "LastCommandResults": "The property 'LastCommandResults' cannot be found on this object. Verify that the property exists and can be set."
At line:383 char:4
+             $psPASSession.LastCommandResults = $APIResponse
+             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], SetValueInvocationException
    + FullyQualifiedErrorId : ExceptionWhenSetting

Exception setting "LastCommandTime": "The property 'LastCommandTime' cannot be found on this object. Verify that the property exists and can be set."
At line:384 char:4
+             $psPASSession.LastCommandTime = Get-Date
+             ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], SetValueInvocationException
    + FullyQualifiedErrorId : ExceptionWhenSetting

# laroberts in wksta
 ➜  Get-Module -ListAvailable -Name psPAS


    Directory: C:\Program Files\WindowsPowerShell\Modules


ModuleType Version    Name                                ExportedCommands
---------- -------    ----                                ----------------
Script     6.4.85     psPAS                               {New-PASSession, Close-PASSession, Add-PASPublicSSHKey, Get-PASPublicSSHKey...}


# laroberts in wksta
 ➜