set only husky if not CI

Author: gfournierPro

Jenkinsfile-itest

@@ -1,4 +1,7 @@
 node('docker') {
+    environment {
+        CI = 'true'
+    }
     stage('Clone') {
         cleanWs()
         checkoutInfo = checkout(scm)

package.json

@@ -4,7 +4,7 @@
   "author": "iExec",
   "license": "Apache-2.0",
   "scripts": {
-    "prepare": "husky",
+    "prepare": "if [ \"$CI\" != \"true\" ]; then husky; fi",
     "codegen": "graph codegen subgraph.template.yaml",
     "test": "npm run codegen && graph test",
     "test-docker": "npm run codegen && docker run -it --rm -v $(pwd):/matchstick/subgraph rainprotocol/matchstick:main",