Update .gitlab-ci.yml file

.gitlab-ci.yml

+stages:
+  - lint
+  
+image: ${CI_DEPENDENCY_PROXY_GROUP_IMAGE_PREFIX}/node:19-alpine
+
+eslint:
+  rules:
+    - if: $CI_COMMIT_REF_PROTECTED == "true" || $CI_PIPELINE_SOURCE == 'merge_request_event'
+  stage: lint
+  script:
+    # Install eslint
+    - npm install
+    # Run eslint
+    - node_modules/eslint/bin/eslint.js .
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