🚨 New Python runtime environment in Heroku

[miss-islington]

There's a new Python runtime enviornment in Heroku. You might want to update the bot to use the new environment by editing the runtime.txt file.

See the changelog at https://devcenter.heroku.com/changelog-items/1875
Message:
Python (CPython) 3.6.12 and 3.7.9 are now available on Heroku.

For more information, see our page on Python Support .

(I'm a bot) 🤖

[Mariatta]

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