[CI] Fix ref for scheduled jazzy testing binary build

That was referring to a non-existing jazzy branch.

Author: Felix Exner

.github/workflows/jazzy-binary-testing.yml

@@ -19,4 +19,4 @@ jobs:
     with:
       ros_distro: rolling
       ros_repo: testing
-      ref_for_scheduled_build: jazzy
+      ref_for_scheduled_build: rolling