[12.x] Add extra 10 seconds of trial time (#1160)

* Add extra 10 seconds of trial time

* Update SubscriptionBuilder.php

Co-authored-by: Taylor Otwell <taylor@laravel.com>

src/SubscriptionBuilder.php

@@ -373,7 +373,8 @@ public function checkout(array $sessionOptions = [], array $customerOptions = []
             // Checkout Sessions are active for 24 hours after their creation and within that time frame the customer
             // can complete the payment at any time. Stripe requires the trial end at least 48 hours in the future
             // so that there is still at least a one day trial if your customer pays at the end of the 24 hours.
-            $minimumTrialPeriod = Carbon::now()->addHours(48);
+            // We also add 10 seconds of extra time to account for any delay with an API request onto Stripe.
+            $minimumTrialPeriod = Carbon::now()->addHours(48)->addSeconds(10);
 
             $trialEnd = $this->trialExpires->gt($minimumTrialPeriod) ? $this->trialExpires : $minimumTrialPeriod;
         } else {