Error in schema of query parameter timestamp

[larsolofsson]

minLength: 1 is missing in the schema of query parameter timestamp .
minLength: 1 to be added to query parameter timestamp in
List supplier-orders,
List logistics-delivery-notes
List logistics-delivery-instructions
List logistics-inventory-changes
List logistics-shipments
List logistics-loading-instructions

Current construct

        - in: query
          name: timestamp
          schema:
            type: string
          required: false
          description: filter based on `timestamp` (can contain an ISO 8601 interval)