fix: Fixed issue where promote was looking at v6 branch.

Author: Donald Labaj

.github/workflows/pr-preview.yml

@@ -15,10 +15,10 @@ jobs:
           git fetch origin pull/$GH_PR_NUM/head:tmp
           git checkout tmp
       - run: |
-          git rev-parse origin/v6
+          git rev-parse origin/main
           git rev-parse HEAD
-          git rev-parse origin/v6..HEAD
-          git log origin/v6..HEAD --format="%b"
+          git rev-parse origin/main..HEAD
+          git log origin/main..HEAD --format="%b"
       # Yes, we really want to checkout the PR
       # Injected by generate-workflows.js
       - uses: actions/setup-node@v1