HACK: skip rosdep update to use cache prior to Ubuntu Noble migration

to unblock CI until docker image for ros rolling are updated to Noble
- osrf/docker_images#728
- ros/rosdistro#40033

Dockerfile

@@ -61,7 +61,9 @@ RUN apt-get update && \
       fastcov \
       git+https://github.com/ruffsl/colcon-cache.git@a937541bfc496c7a267db7ee9d6cceca61e470ca \
       git+https://github.com/ruffsl/colcon-clean.git@a7f1074d1ebc1a54a6508625b117974f2672f2a9 \
-    && rosdep update \
+    # FIXME: uncoment after rolling docker images update to Noble 
+    # https://github.com/osrf/docker_images/issues/728
+    # && rosdep update \
     && colcon mixin update \
     && colcon metadata update \
     && rm -rf /var/lib/apt/lists/*