### Body

Currently our telegram integration uses Telegram v13 telegram-bot library. On 1st of Jan 2023 a new, backwards incompatible version of Telegram-bot has been released : https://pypi.org/project/python-telegram-bot/20.0/#history and at least as reported by MyPy and our test suite test failures, Telegram 20 needs some changes to work:

Here is a transition guide that might be helpful. 

Transition guide is here: https://github.com/python-telegram-bot/python-telegram-bot/wiki/Transition-guide-to-Version-20.0

In the meantime we limit telegram to < 20.0.0

### Committer

- [X] I acknowledge that I am a maintainer/committer of the Apache Airflow project.
def setup_method(self):
        db.merge_conn(
            Connection(
                conn_id="telegram-webhook-without-token",
                conn_type="http",
            )
        )
        db.merge_conn(
            Connection(
                conn_id="telegram_default",
                conn_type="http",
                password=TELEGRAM_TOKEN,
            )
        )
        db.merge_conn(
            Connection(
                conn_id="telegram-webhook-with-chat_id",
                conn_type="http",
                password=TELEGRAM_TOKEN,
                host="-420913222",
            )
        )
    def test_should_raise_exception_if_both_connection_or_token_is_not_provided(self):