use for loop instead of while

.gitea/workflows/kubeconform.yml

@@ -60,7 +60,7 @@ jobs:
           export KUBECONFORM_CACHE_DIR="/tmp/kubeconform-cache"
           mkdir -p "$KUBECONFORM_CACHE_DIR"
 
-          while IFS= read -r file; do
+          for file in ${ALL_CHANGED_FILES}; do
             [ -z "$file" ] && continue
             echo "=== Validating: $file ==="
             KIND=$(yq -r '.kind // ""' "$file" 2>/dev/null || echo "")
@@ -88,6 +88,6 @@ jobs:
             fi
 
             echo ""
-          done <<< "${ALL_CHANGED_FILES[@]}"
+          done
 
           exit $EXIT_CODE