Update changelog with features and changes from Bot API 9.6

CHANGES/1792.misc.rst

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+Updated to `Bot API 9.6 <https://core.telegram.org/bots/api-changelog#april-3-2026>`_
+
+**Managed Bots**
+
+*New Methods:*
+
+- Added :class:`aiogram.methods.get_managed_bot_token.GetManagedBotToken` method - retrieves the token of a managed bot
+- Added :class:`aiogram.methods.replace_managed_bot_token.ReplaceManagedBotToken` method - generates a new token for a managed bot, invalidating the previous one
+- Added :class:`aiogram.methods.save_prepared_keyboard_button.SavePreparedKeyboardButton` method - saves a keyboard button to be used in Mini Apps via :code:`requestChat`
+
+*New Types:*
+
+- Added :class:`aiogram.types.keyboard_button_request_managed_bot.KeyboardButtonRequestManagedBot` type - defines criteria for selecting a managed bot via a keyboard button
+- Added :class:`aiogram.types.managed_bot_created.ManagedBotCreated` type - describes a service message about a managed bot being created
+- Added :class:`aiogram.types.managed_bot_updated.ManagedBotUpdated` type - describes updates to a managed bot
+- Added :class:`aiogram.types.prepared_keyboard_button.PreparedKeyboardButton` type - represents a prepared keyboard button for use in Mini Apps
+
+*New Fields:*
+
+- Added :code:`can_manage_bots` field to :class:`aiogram.types.user.User` - indicates whether the bot can manage other bots
+- Added :code:`request_managed_bot` field to :class:`aiogram.types.keyboard_button.KeyboardButton` - requests the user to select a managed bot
+- Added :code:`managed_bot_created` field to :class:`aiogram.types.message.Message` - service message about a managed bot being created (type: :class:`aiogram.types.managed_bot_created.ManagedBotCreated`)
+- Added :code:`managed_bot` field to :class:`aiogram.types.update.Update` - contains updates received by a managed bot
+
+**Polls**
+
+*New Types:*
+
+- Added :class:`aiogram.types.poll_option_added.PollOptionAdded` type - describes a service message about a new option added to a poll
+- Added :class:`aiogram.types.poll_option_deleted.PollOptionDeleted` type - describes a service message about a poll option being deleted
+
+*New Fields:*
+
+- Replaced :code:`correct_option_id` with :code:`correct_option_ids` in :class:`aiogram.types.poll.Poll` - supports multiple correct answers for quiz polls
+- Added :code:`allows_revoting` field to :class:`aiogram.types.poll.Poll` - indicates whether users are allowed to change their vote
+- Added :code:`description` and :code:`description_entities` fields to :class:`aiogram.types.poll.Poll` - optional poll description with formatting entities
+- Added :code:`persistent_id` field to :class:`aiogram.types.poll_option.PollOption` - stable identifier for a poll option
+- Added :code:`added_by_user` and :code:`added_by_chat` fields to :class:`aiogram.types.poll_option.PollOption` - identifies who added the option
+- Added :code:`addition_date` field to :class:`aiogram.types.poll_option.PollOption` - date when the option was added
+- Added :code:`option_persistent_ids` field to :class:`aiogram.types.poll_answer.PollAnswer` - persistent IDs of the chosen options
+- Added :code:`poll_option_id` field to :class:`aiogram.types.reply_parameters.ReplyParameters` - allows replying to a specific poll option
+- Added :code:`reply_to_poll_option_id` field to :class:`aiogram.types.message.Message` - the persistent ID of the poll option the message replies to
+
+*New Parameters for* :class:`aiogram.methods.send_poll.SendPoll`:
+
+- Added :code:`allows_revoting` - allows users to change their vote after submission
+- Added :code:`shuffle_options` - randomizes the order of poll options for each user
+- Added :code:`allow_adding_options` - allows users to add their own poll options
+- Added :code:`hide_results_until_closes` - hides vote results until the poll is closed
+- Added :code:`description`, :code:`description_parse_mode`, :code:`description_entities` - optional poll description with parse mode and formatting