Bump stripe-php from 19.0.0 to 19.4.1

plugins/stripe-php/lib/V2/Billing/MeterEvent.php

@@ -5,7 +5,7 @@
 namespace Stripe\V2\Billing;
 
 /**
- * Fix me empty_doc_string.
+ * A Meter Event is a usage record that captures billable activity for usage-based billing. Meter Events contain an event name, timestamp, and payload with customer mapping and usage value, enabling accurate usage tracking and billing.
  *
  * @property string $object String representing the object's type. Objects of the same type share the same value of the object field.
  * @property int $created The creation time of this meter event.

plugins/stripe-php/lib/V2/Billing/MeterEventAdjustment.php

@@ -5,6 +5,8 @@
 namespace Stripe\V2\Billing;
 
 /**
+ * A Meter Event Adjustment is used to cancel or modify previously recorded meter events. Meter Event Adjustments allow you to correct billing data by canceling individual events or event ranges, with tracking of adjustment status and creation time.
+ *
  * @property string $id The unique id of this meter event adjustment.
  * @property string $object String representing the object's type. Objects of the same type share the same value of the object field.
  * @property (object{identifier: string}&\Stripe\StripeObject) $cancel Specifies which event to cancel.

plugins/stripe-php/lib/V2/Billing/MeterEventSession.php

@@ -5,6 +5,8 @@
 namespace Stripe\V2\Billing;
 
 /**
+ * A Meter Event Session is an authentication session for the high-throughput meter event API. Meter Event Sessions provide temporary authentication tokens with expiration times, enabling secure and efficient bulk submission of usage events.
+ *
  * @property string $id The unique id of this auth session.
  * @property string $object String representing the object's type. Objects of the same type share the same value of the object field.
  * @property string $authentication_token The authentication token for this session.  Use this token when calling the high-throughput meter event API.