Fix GitHub auth login for upmerge workflow (#1278)

* Adding GH_TOKEN

Signed-off-by: willdavsmith <[email protected]>

* Adding Signoff

Signed-off-by: willdavsmith <[email protected]>

* Removing Signoff

Signed-off-by: willdavsmith <[email protected]>

---------

Signed-off-by: willdavsmith <[email protected]>

.github/workflows/upmerge.yaml

@@ -39,12 +39,15 @@ jobs:
           ref: edge
           # https://github.com/actions/checkout/issues/125#issuecomment-570254411
           fetch-depth: 0
+          persist-credentials: false
 
       - name: Configure git
+        env:
+            GH_TOKEN: ${{ secrets.GH_RAD_CI_BOT_PAT }}
         run: |
           git config --global user.email "[email protected]"
           git config --global user.name "Radius CI Bot"
-          gh auth login --with-token <<< "${{ secrets.GH_RAD_CI_BOT_PAT }}"
+          git remote set-url origin https://[email protected]/${{ github.repository }}
 
       # Create a new branch from edge. This branch will be used to PR back into edge.
       - name: Create new branch
@@ -78,4 +81,6 @@ jobs:
       # Create a PR from the new branch to edge
       - name: Create pull request
         if: env.NO_CHANGES != 'true'
+        env:
+          GH_TOKEN: ${{ secrets.GH_RAD_CI_BOT_PAT }}
         run: gh pr create --title "Upmerge to edge" --body "Upmerge to edge (kicked off by @${{ github.triggering_actor }})" --base edge --head $BRANCH_NAME