Improve version extraction in Update-AITool

Refines the process of retrieving the current tool version by selecting only the first line of output and trimming whitespace. This ensures more accurate version parsing from command output.

Author: potatoqualitee

public/Update-AITool.ps1

@@ -88,8 +88,8 @@ function Update-AITool {
                     $tool = $script:ToolDefinitions[$toolName]
                     $oldVersion = $null
                     if (Test-Command -Command $tool.Command) {
-                        $oldVersion = & $tool.Command --version 2>&1 | Out-String
-                        $oldVersion = $oldVersion -replace '^.*?(\d+\.\d+\.\d+).*$', '$1'
+                        $oldVersion = & $tool.Command --version 2>&1 | Select-Object -First 1
+                        $oldVersion = ($oldVersion -replace '^.*?(\d+\.\d+\.\d+).*$', '$1').Trim()
                         Write-PSFMessage -Level Verbose -Message "Current version: $oldVersion"
                     }