Missing documentation requirement: GITHUB_TOKEN write permission

[raidenfreeman]

Bug description

The documentation is missing a required step: the Github Token needs write permission if it's used for test outputs.

Steps to reproduce

Create a new repository on Github.
Populate it with a new unity project.
Add any test to the project
Use the Simple Example main.yml
Push to GH
The action should fail during testing with the following message:
"Resource not available by integration"

Expected behavior

The build should complete

Additional details

The solution as per stack overflow is to give write permission to your repository's GITHUB_TOKEN.
Older repositories had that setting by default, but it changed on Feb 2023 (github changelog)

[raidenfreeman]

I'll try to open a PR to add the permission suggestion to the Common Issues and the Test Runner page.

[Valphai]

It would be awesome to know what write permissions are needed explicitly.