add parameters to parallel state

Author: HeNeos

packages/aws-cdk-lib/aws-stepfunctions/lib/states/parallel.ts

@@ -29,6 +29,16 @@ interface ParallelJsonPathOptions extends JsonPathCommonOptions {
    * @default - None
    */
   readonly resultSelector?: { [key: string]: any };
+
+  /**
+   * Parameters pass a collection of key-value pairs, either static values or JSONPath expressions that select from the input.
+   *
+   * @see
+   * https://docs.aws.amazon.com/step-functions/latest/dg/input-output-inputpath-params.html#input-output-parameters
+   *
+   * @default No parameters
+   */
+  readonly parameters?: { [name: string]: any };
 }
 interface ParallelJsonataOptions extends JsonataCommonOptions {
   /**