message: ci: add 90s timeout when waiting for sequencer to be up
diff: #!/bin/bash
  CONTAINER=l2geth
  +RETRIES=30
  +i=0
  until docker-compose logs l2geth | grep -q "Starting Sequencer Loop";
  do
  sleep 3
  + if [ $i -eq $RETRIES ]; then
  + echo 'Timed out waiting for sequencer'
  + break
  + fi
  echo 'Waiting for sequencer...'
  + ((i=i+1))
  done
  