adding user for publishing

.gitlab-ci.yml

@@ -24,6 +24,8 @@ publish:
   image: node:10
   script:
     - npm i
+    - git config --global user.email "timon@timon.ch"
+    - git config --global user.name "Timon Stampfli"
     - npx vsce publish -p $PUBLISHING_TOKEN $CI_COMMIT_TAG
   dependencies:
     - build-helper