Not able to authenticate using Github Enterprise version

**Not able to authenticate using Github Enterprise version**
A clear and concise description of what the bug is.
I setup shipjs and configured github token in my Github Enterprise account.
While running the `yarn run release`
after running some checks, one of the step is Authentication, which opens github sign in page.
But my repository is under the github enterprise version.
How can I authenticate using Github enterprise version?

**To Reproduce**
Steps to reproduce the behavior:
1. Run `yarn run release`
2. Wait till github authentication prompts open.
3. Try to enter the token created under the Github Enterprise account.

**Expected behavior**
Authentication should be successful and should be able to create release branch under the Github enterprise repository.

**Screenshots**
If applicable, add screenshots to help explain your problem.

**Environment (please complete the following information):**
- environment: (your local machine, CircleCI, Travis CI, etc.) local machine
- `node -v`: v.12.18.1
- `npm -v` or `yarn -v` : yarn v3.2.0
- Ship.js version: 0.24.4

**Additional context**
NA

Reproduce the issue by running `yarn run release` with a token from a GitHub Enterprise account on the reported Ship.js, Node.js, and local-machine environment. Start at the authentication prompt and determine how the GitHub host is selected; done means authentication succeeds and a release branch can be created in the GitHub Enterprise repository.

Written by the indexing model from the issue text.