Add new reply_markup field to Message entity

CHANGELOG.md

@@ -6,6 +6,7 @@ Exclamation symbols (:exclamation:) note something of importance e.g. breaking c
 ## [Unreleased]
 ### Added
 - Bot API 4.3 (Seamless Telegram Login, `LoginUrl`)
+- `reply_markup` field to `Message` entity.
 ### Changed
 ### Deprecated
 ### Removed

src/Entities/Message.php

@@ -60,6 +60,7 @@ use Longman\TelegramBot\Entities\TelegramPassport\PassportData;
  * @method SuccessfulPayment getSuccessfulPayment()     Optional. Message is a service message about a successful payment, information about the payment.
  * @method string            getConnectedWebsite()      Optional. The domain name of the website on which the user has logged in.
  * @method PassportData      getPassportData()          Optional. Telegram Passport data
+ * @method InlineKeyboard    getReplyMarkup()           Optional. Inline keyboard attached to the message. login_url buttons are represented as ordinary url buttons.
  */
 class Message extends Entity
 {
@@ -96,6 +97,7 @@ class Message extends Entity
             'invoice'            => Invoice::class,
             'successful_payment' => SuccessfulPayment::class,
             'passport_data'      => PassportData::class,
+            'reply_markup'       => InlineKeyboard::class,
         ];
     }