Update columnSpan return types

Author: andreia

src/Forms/Components/GoogleAutocomplete.php

@@ -218,7 +218,7 @@ public function autocompleteFieldColumnSpan(int|array|string|\Closure $autocompl
         return $this;
     }
 
-    public function getAutocompleteFieldColumnSpan(): ?string
+    public function getAutocompleteFieldColumnSpan(): int|array|string|null
     {
         return $this->evaluate($this->autocompleteFieldColumnSpan);
     }