fix: avoid code injection for directory management

(cherry picked from commit a99e33f)

Author: ajpinedam

UnoCheck/Checkups/XCodeCheckup.cs

@@ -94,7 +94,9 @@ public override Task<DiagnosticResult> Examine(SharedState history)
 
 					// If we do have a sdk version, it means the tools are installed but the iOS SDK runtime is missing
 					Spectre.Console.AnsiConsole.MarkupLine($"Installing the missing iOS SDK runtime version {sdkVersion}...");
-					var tempPath = Path.GetTempPath();
+
+					var tempPath = Path.Combine(Path.GetTempPath(), $"Uno.Check.iOS-{Guid.NewGuid()}");
+					Directory.CreateDirectory(tempPath);
 
 					return Task.FromResult(new DiagnosticResult(
 						Status.Error,