Support for auto-merge parameter

Hi, according to [docs](https://docs.github.com/en/rest/reference/repos#create-a-deployment), the `auto-merge` parameter is enabled by default. When the ref branch is behind default branch, the response code is 202, and an error is raised because it expect a 201 code.
Also, I think that add the option to set `auto-merge`  can be useful.


Thank you a lot, you've made a great work.