.github/workflows/build-xpi.yml

@@ -68,7 +68,7 @@ jobs:
       #    (toutes branches, utile pour debug)
       # ---------------------------------------------------------------
       - name: Upload unsigned artifact
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v3
         with:
           name: ${{ steps.version.outputs.unsigned_xpi }}
           path: dist/${{ steps.version.outputs.unsigned_xpi }}