What kind of feature are you missing? Where do you notice a shortcoming of PTB?

On a bot that is used enough, the workload of encoding and decoding json when using the telegram API may be a relevant factor to bot performance.

Describe the solution you'd like

Maintaining support for ujson as an optional dependency to accelerate json decoding and encoding.

Describe alternatives you've considered

No response

Additional context

I am making this based on #3037 (comment)