Steps to reproduce

1. Create bot with connected payment provider YooKassa

2. Call bot.send_invoice(..., send_phone_number_to_provider=True, need_phone_number=True)

Expected behaviour

sendInvoice POST request to Telegram API with send_phone_number_to_provider: true in body

Actual behaviour

sendInvoice POST request to Telegram API without send_phone_number_to_provider: true in body. This behaviour produces an error "Customer e-mail and phone number are not specified" when trying to pay with YooKassa.

Configuration

Operating System:
Linux Mint 20.1 Ulyssa

Version of Python, python-telegram-bot & dependencies:

python-telegram-bot 13.5
Bot API 5.2
certifi 2020.12.05
Python 3.9.0+ (default, Oct 20 2020, 08:43:38)  [GCC 9.3.0]