Added the parameter business_connection_id to the methods pinChatMessage and unpinChatMessage

Author: mircoianese

library/src/main/java/com/pengrad/telegrambot/request/PinChatMessage.java

@@ -16,5 +16,8 @@ public PinChatMessage(Object chatId, int messageId) {
     public PinChatMessage disableNotification(boolean disableNotification) {
         return add("disable_notification", disableNotification);
     }
+    public PinChatMessage businessConnectionId(String businessConnectionId) {
+        return add("business_connection_id", businessConnectionId);
+    }
 
 }

library/src/main/java/com/pengrad/telegrambot/request/UnpinChatMessage.java

@@ -16,4 +16,8 @@ public UnpinChatMessage(Object chatId) {
     public UnpinChatMessage messageId(Integer messageId) {
         return add("message_id", messageId);
     }
+
+    public UnpinChatMessage businessConnectionId(String businessConnectionId) {
+        return add("business_connection_id", businessConnectionId);
+    }
 }