Update check-restricted-files.yaml

Author: ralfhandl

.github/workflows/check-restricted-files.yaml

@@ -5,11 +5,8 @@ name: check-restricted-files
 
 # This workflow checks for changes of restricted files in a pull request
 
-# run this on push to any branch and creation or review of pull-requests
 on:
-  # - push
   - pull_request
-  # - pull_request_review
 
 jobs:
   check-files:
@@ -21,13 +18,12 @@ jobs:
           fetch-depth: 0
 
       - name: Check changed files
-        id: check-changes
         shell: bash
         run: |
           # TODO: skip if base.ref is main
 
           git diff --exit-code --name-only ${{ github.event.pull_request.head.sha }} ${{ github.event.pull_request.base.sha }} -- schemas versions
-          if [ $? -ne 0 ]; then
+          if [[ $? -ne 0 ]]; then
             echo This PR contains changes to files that should not be changed on ${{ github.event.pull_request.base.ref }}
             exit 1
-          fi
+          fi