chore: increase relayer delay (#532)

* fix: handle first nonce in orchestrator

* chore: try to reduce relayer flakiness

e2e/scripts/start_relayer.sh

@@ -31,7 +31,7 @@ done
 # this will introduce flakiness but it's gonna be complicated to wait for validators to be created
 # and also waiting for them to change their addresses in bash. Also, depending on the testing scenarios,
 # the network topology varies. So, the best we can do now is sleep.
-sleep 60s
+sleep 120s
 
 # check whether to deploy a new contract or use an existing one
 if [[ -z "${QGB_CONTRACT}" ]]