🩹 [Patch]: Support Token as a SecureString on `Connect-GitHubAcco…

…unt` (#155)

## Description

- Support `Token` as a `SecureString` on `Connect-GitHubAccount`

## Type of change

<!-- Use the check-boxes [x] on the options that are relevant. -->

- [ ] 📖 [Docs]
- [ ] 🪲 [Fix]
- [x] 🩹 [Patch]
- [ ] ⚠️ [Security fix]
- [ ] 🚀 [Feature]
- [ ] 🌟 [Breaking change]

## Checklist

<!-- Use the check-boxes [x] on the options that are relevant. -->

- [x] I have performed a self-review of my own code
- [x] I have commented my code, particularly in hard-to-understand areas

src/functions/public/Auth/Connect-GitHubAccount.ps1

@@ -78,15 +78,15 @@
         )]
         [switch] $UseAccessToken,
 
-        # An access token to use for authentication.
+        # An access token to use for authentication. Can be both a string or a SecureString.
         # Supports both personal access tokens (PAT) and GitHub App installation access tokens (IAT).
         # Example: 'ghp_1234567890abcdef'
         # Example: 'ghs_1234567890abcdef'
         [Parameter(
             Mandatory,
             ParameterSetName = 'Token'
         )]
-        [string] $Token,
+        [object] $Token,
 
         # The client ID for the GitHub App to use for authentication.
         [Parameter(ParameterSetName = 'UAT')]
@@ -133,6 +133,10 @@
         [switch] $Silent
     )
     try {
+        if ($Token -is [System.Security.SecureString]) {
+            $Token = ConvertFrom-SecureString $Token -AsPlainText
+        }
+
         $HostName = $HostName -replace '^https?://'
         $ApiBaseUri = "https://api.$HostName"
         $authType = $PSCmdlet.ParameterSetName