Add yarn.lock to gitignore

2 jobs for 7-gestion-des-droits-utilisateur-code-interface in 1 minute and 59 seconds (queued for 1 second)
Status Name Job ID Coverage
  Test
passed unit tests #2014
preprod

00:00:55

83.0%
 
  Build
passed static build #2015
preprod

00:01:03