Potential fix for pull request finding

Co-authored-by: Copilot Autofix powered by AI <175728472+Copilot@users.noreply.github.com>

Author: kkorotkov

.github/workflows/glossary-monitor.yml

@@ -153,7 +153,7 @@ jobs:
         with:
           token: ${{ secrets.GH_TOKEN }}
           branch: glossary/state-update
-          base: master
+          base: ${{ github.event.repository.default_branch }}
           title: "chore: advance glossary monitor state baseline"
           body: |
             The **Glossary Monitor** ran this week and scanned new commits across