Rain build can't generate Pkl for array of arrays

[Eric Z. Beard]

laptop cloudformation-pkl  :) ./scripts/gen-one-pkl.sh AWS::QuickSight::DataSet
AWS::QuickSight::DataSet
panic: no item type for TagRuleConfigurations [recovered]
	panic: no item type for TagRuleConfigurations

        "TagRuleConfigurations": {
          "type": "array",
          "items": {
            "type": "array",
            "items": {
              "type": "string",
              "maxLength": 128,
              "minLength": 1
            },
            "maxItems": 50,
            "minItems": 1
          },
          "maxItems": 50,
          "minItems": 1,
          "description": "<p>A list of tag configuration rules to apply to a dataset. All tag configurations have the OR condition. Tags within each tile will be joined (AND). At least one rule in this structure must have all tag values assigned to it to apply Row-level security (RLS) to the dataset.</p>"
        }