Add configurable Timeout

[braedongough]

This is my new favourite github action, thank you for creating this!

Currently, the action defaults to a 60 second timeout, however, I can see the githubApplication.create method has already been written to accept a timeout.

Would you be open to a PR making timeout an optional parameter that can be passed to the action?

[fourass]

Hello,
Anything new regarding this Issue ? We are using this action quite often and it's amazing, but sometimes our jobs exceeds the 1h TTL, and we don't have a way to set a better TTL for the token we retrieve,
Any advice on this ?