chore(deps): bump python-telegram-bot from 20.4 to 20.5

Bumps [python-telegram-bot](https://github.com/python-telegram-bot/python-telegram-bot) from 20.4 to 20.5.
- [Release notes](https://github.com/python-telegram-bot/python-telegram-bot/releases)
- [Changelog](https://github.com/python-telegram-bot/python-telegram-bot/blob/master/CHANGES.rst)
- [Commits](python-telegram-bot/python-telegram-bot@v20.4...v20.5)

---
updated-dependencies:
- dependency-name: python-telegram-bot
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -2,7 +2,7 @@
 graia-ariadne==0.11.7
 graia-broadcast==0.19.2
 graiax-silkcoder
-python-telegram-bot==20.4
+python-telegram-bot==20.5
 discord.py
 wechatpy~=2.0.0a26