repo-updater: Move GithubSource test to github_test.go
Created by: mrnugget
This just moves a test from one file to another file, so it's easier to find. Noticed this in the last PR but wanted to do it separately.
Test plan: go test
Created by: mrnugget
This just moves a test from one file to another file, so it's easier to find. Noticed this in the last PR but wanted to do it separately.
Test plan: go test