[GHA] Actually use the changes from this branch while building

The workflow checks out the `docusaurus-versions` branch, we need to merge in the changes from this branch to actually debug yarn and docusaurus

.github/workflows/publish_website_testing.yml

@@ -24,7 +24,7 @@ jobs:
       run: |
         git config --global user.name "github-actions[bot]"
         git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
-        git merge origin/main
+        git merge origin/tutorial-conversion-test-artifact # test with changes from this branch
         # To avoid a large number of commits we don't push this sync commit to github until a new release.
     - name: Install uv
       uses: astral-sh/setup-uv@v5