Update Stripe lib to 10.7.0

htdocs/includes/stripe/stripe-php/lib/Util/Set.php

@@ -37,6 +37,10 @@ class Set implements IteratorAggregate
         return \array_keys($this->_elts);
     }
 
+    /**
+     * @return ArrayIterator
+     */
+    #[\ReturnTypeWillChange]
     public function getIterator()
     {
         return new ArrayIterator($this->toArray());