Cannot use @actions/github and @actions/artifact together

[wolfy1339]

Describe the bug
Due to differing versions of the Octokit modules, you cannot use these packages together

See octokit/plugin-rest-endpoint-methods.js#737

To Reproduce
Steps to reproduce the behavior:

1. Install @actions/github and @actions/artifact modules
2. Create a TypeScript source file that uses both packages
3. Try to compile the TypeScript source file
4. See error

Expected behavior
For the used versions of Octokit to be in sync and the packages usable together

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

Desktop (please complete the following information):

• OS: [e.g. iOS]
• Browser [e.g. chrome, safari]
• Version [e.g. 22]

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context
Add any other context about the problem here.

/cc @austenstone