Enable Twilio's smart encoding

[mveytsman]

Describe your changes

We're having some issues with messages being garbled

Hoping this fixes it

Checklist before requesting a review

• [ ] I have performed a self-review of my code
• [ ] If it is a core feature, I have added tests.
• [ ] Are there other PRs or Issues that I should link to here?
• [ ] Will this be part of a product update? If yes, please write one phrase about this update in the description above.