Invert order of datastreams comparison.

It was considering the new datastream as the one from the fork point
instead of the of from the pull request.

Author: ggbecker

.github/workflows/compare-ds.yaml

@@ -86,7 +86,7 @@ jobs:
         run: ./build_product ${{steps.product.outputs.prop}} --datastream-only
       - name: Compare datastreams
         if: ${{ steps.ctf.outputs.CTF_OUTPUT_SIZE != '0' }}
-        run: utils/compare_ds.py pr_artifacts/artifacts/ssg-${{steps.product.outputs.prop}}-ds.xml build/ssg-${{steps.product.outputs.prop}}-ds.xml | tee diff.log
+        run: utils/compare_ds.py build/ssg-${{steps.product.outputs.prop}}-ds.xml pr_artifacts/artifacts/ssg-${{steps.product.outputs.prop}}-ds.xml | tee diff.log
         env:
           PYTHONPATH: ${{ github.workspace }}
       - name: Test if there are datastream changes