Heroku static IP ranges for allowed IP addresses on external GitHub instances

[abernicchia-heroku]

Required Terms

• [X] I agree to follow this project's Code of Conduct
• [X] I have read and accept the Salesforce Program Agreement

What service(s) is this request for?

Heroku build

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

as per this KB it's not possible to provide a range of IPs to limit access to external GitHub enterprise instances, it would be helpful to have this option