fix: correctly iterate over manifests in kubeconform workflow

.gitea/workflows/kubeconform.yml

@@ -65,7 +65,7 @@ jobs:
             echo "=== Validating: $file ==="
             MANIFESTS=$(yq e '.[]' "$file" | jq -c 'select(.kind != null)')
 
-            for manifest in ${MANIFESTS}; do
+            for manifest in "${MANIFESTS[@]}"; do
               KIND=$(echo $manifest | yq -r '.kind // ""')
 
               if [[ -n "$KIND" && -n "${SCHEMA_MAP[$KIND]}" ]]; then