Update check-restricted-files.yaml

Author: ralfhandl

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

@@ -20,10 +20,12 @@ jobs:
       - name: Check changed files
         shell: bash
         run: |
+          set +e
+          
           # TODO: skip if base.ref is main
 
-          changes = $(git diff --exit-code --name-only ${{ github.event.pull_request.head.sha }} ${{ github.event.pull_request.base.sha }} -- schemas versions)
-          if [[ $changes -ne 0 ]]; then
+          git diff --exit-code --name-only ${{ github.event.pull_request.head.sha }} ${{ github.event.pull_request.base.sha }} -- schemas versions
+          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