Update Downstream.yml

Author: MartinuzziFrancesco

.github/workflows/Downstream.yml

@@ -47,3 +47,7 @@ jobs:
             @info "Not compatible with this release. No problem." exception=err
             exit(0)  # Exit immediately, as a success
           end
+      - uses: julia-actions/julia-processcoverage@v1
+      - uses: codecov/codecov-action@v1
+        with:
+          file: lcov.info