Fix merge script output file name

.github/workflows/merge-contexts-metadata.yaml

@@ -29,6 +29,6 @@ jobs:
         run: |
           git config --local user.email "[email protected]"
           git config --local user.name "GitHub Action"
-          git add contexts.yaml
+          git add merged-contexts-metadata.yaml
           git diff --quiet && git diff --staged --quiet || git commit -m "Update contexts metadata file"
           git push