Update environmental variable in GitHub workflow

The environmental variable name for storing the GitHub token in GitHub Actions workflow file (test.yml) has been changed from GH_TOKEN to GITHUB_TOKEN. Additionally, the explicit GitHub login command using the stored token has been removed.

.github/workflows/test.yml

@@ -27,9 +27,8 @@ jobs:
       - name: List team members ad check
         id: check-user
         env:
-          GH_TOKEN: ${{ secrets.GH_TOKEN }}
+          GITHUB_TOKEN: ${{ secrets.GH_TOKEN }}
         run: |
-          gh auth login --with-token <<< $GH_TOKEN
           members=$(gh api --paginate "organizations/77433905/team/5565599/members" | jq -r '.[] | .login')
           echo "Team members: $members"
           if [[ $members == *"$PR_CREATOR"* ]]; then