ignore url errors in start_ursim.sh

Since that script contains the container's vnc url, which is not necessarily available

Author: Felix Exner

.github/workflows/ci.yml

@@ -66,7 +66,8 @@ jobs:
             --exclude-dir=CMakeModules \
             --exclude=tcp_socket.cpp \
             --exclude-dir=debian \
-            --exclude=real_time.md
+            --exclude=real_time.md \
+            --exclude=scripts/start_ursim.sh
 
   rosdoc_lite_check:
     runs-on: ubuntu-latest