ci: update action hash

Author: sjinks

.github/workflows/ai-changelog.yml

@@ -47,7 +47,7 @@ jobs:
       - name: Generate Changelog Entry
         if: steps.check_access.outputs.authorized == 'true'
         id: changelog
-        uses: Automattic/vip-actions/ai-changelog@429a448961152b194fd94df2ce9c82fc293e3ec7 # trunk
+        uses: Automattic/vip-actions/ai-changelog@2ba3d4d21f3bf82249fd26b517b057dda45d8367 # trunk
         with:
           pr_number: ${{ github.event.issue.number }}
           openai_api_key: ${{ secrets.OPENAI_API_KEY }}