Bandage telegram bot

[dgomes]

Description:

This is just a quick fix... many things wrong with the integration, will require a full rewrite even because the upstream library has suffered an important refactor in version 12

https://github.com/python-telegram-bot/python-telegram-bot/wiki/Transition-guide-to-Version-12.0

Related issue (if applicable): fixes #23011

Pull request in home-assistant.io with documentation (if applicable): home-assistant/home-assistant.io#<home-assistant.io PR number goes here>

Example entry for configuration.yaml (if applicable):

telegram_bot:
  - platform: polling
    api_key: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
    allowed_chat_ids:
      - 132312312
  - platform: webhooks
    api_key: aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
    parse_mode: html
    allowed_chat_ids:
      - 123123123

Checklist:

• The code change is tested and works locally.
• Local tests pass with tox. Your PR cannot be merged unless tests pass
• There is no commented out code in this PR.

If user exposed functionality or configuration variables are added/changed:

• Documentation added/updated in home-assistant.io

If the code communicates with devices, web services, or third-party tools:

• The manifest file has all fields filled out correctly (example).
• New dependencies have been added to requirements in the manifest (example).
• New dependencies are only imported inside functions that use them (example).
• New or updated dependencies have been added to requirements_all.txt by running script/gen_requirements_all.py.
• New files were added to .coveragerc.

If the code does not interact with devices:

• Tests have been added to verify that the new code works.

[balloob]

Removing the milestone because it will confuse our milestone cherry picker script once we cut the beta. It's not needed now as we haven't cut the beta.