ci: add fake identity to avoid merge error

Author: Hweinstock

.github/workflows/node.js.yml

@@ -84,10 +84,13 @@ jobs:
                   git remote add forkUpstream https://github.com/$REPO_NAME  # URL of the fork
                   git fetch forkUpstream  # Fetch fork
 
+            # Because `git merge` makes a commit, we need to establish an identity to avoid 'Committer identity unknown' error
             - name: Merge in target branch to avoid false negatives.
               env:
                   TARGET_BRANCH: ${{ github.event.pull_request.base.ref }}
               run: |
+                  git config --global user.email "[email protected]"
+                  git config --global user.name "ci"
                   git merge origin/$TARGET_BRANCH
 
             - name: Compute git diff