Add Hong Kong to Common runtime

### Required Terms

- [X] I agree to follow this project's [Code of Conduct](https://github.com/heroku/roadmap/blob/main/CODE_OF_CONDUCT.md)
- [X] I have read and accept the [Salesforce Program Agreement](https://www.salesforce.com/company/program-agreement/)

### What service(s) is this request for?

Heroku Dynos

### Tell us about what you're trying to solve. What challenges are you facing?

Hi team, would you consider adding Hong Kong (in AWS) ?

I have been using Europe Common runtime. The closest server is Tokyo which is only for Private Spaces.

Thanks,
Xavier