fix: point to fixed jenkinslib

Author: DamienMure

Jenkinsfile_Subgraph_viviani

@@ -1,10 +1,10 @@
 //Readme @ http://gitlab.iex.ec:30000/iexec/jenkins-library
 
-@Library('global-jenkins-library@2.7.0') _
+@Library('global-jenkins-library@fix/subgraph_deploy_add_custom_filename') _
 deploySubGraph(
   targetRemoteHost : 'azubgrpvx-thegraph-viviani.public.az2.internal',
   subgraphFolder: './',
   subgraphFilename: 'subgraph.viviani.yaml',
   subgraphVersionLabel: 'v1.0.0-rc.1',
   subgraphLabel: 'viviani/poco-v5'
-)
+)