Update GitHub Actions workflow to use NPM publishing version 1.2.0

Author: Le-Caignec

.github/workflows/publish.yml

@@ -6,8 +6,6 @@ on:
 
 jobs:
   publish:
-    uses: iExecBlockchainComputing/github-actions-workflows/.github/workflows/publish-npm.yml@publish-npm-v1.0.0
-    with:
-      scope: '@iexec'
+    uses: iExecBlockchainComputing/github-actions-workflows/.github/workflows/publish-npm.yml@publish-npm-v1.2.0
     secrets:
       npm-token: ${{ secrets.NPM_TOKEN }}