fix: address types of ArrayCsvStringifierParams and ObjectCsvStringifierParams

[baseballyama]

It's unclear from which version of TypeScript this error started occurring, but at least in version 5.7.2, the following error appears, so I have made the necessary adjustments.

../../../node_modules/.pnpm/csv-writer@1.6.0/node_modules/csv-writer/src/lib/csv-writer-factory.ts:30:85 - error TS2379: Argument of type '{ header: string[] | undefined; fieldDelimiter: string | undefined; recordDelimiter: string | undefined; alwaysQuote: boolean | undefined; }' is not assignable to parameter of type 'ArrayCsvStringifierParams' with 'exactOptionalPropertyTypes: true'. Consider adding 'undefined' to the types of the target's properties.
  Types of property 'header' are incompatible.
    Type 'string[] | undefined' is not assignable to type 'string[]'.
      Type 'undefined' is not assignable to type 'string[]'.

 30         const csvStringifier = this.csvStringifierFactory.createArrayCsvStringifier({
                                                                                        ~
 31             header: params.header,
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
... 
 34             alwaysQuote: params.alwaysQuote
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 35         });
    ~~~~~~~~~

../../../node_modules/.pnpm/csv-writer@1.6.0/node_modules/csv-writer/src/lib/csv-writer-factory.ts:40:86 - error TS2379: Argument of type '{ header: ObjectStringifierHeader; fieldDelimiter: string | undefined; recordDelimiter: string | undefined; headerIdDelimiter: string | undefined; alwaysQuote: boolean | undefined; }' is not assignable to parameter of type 'ObjectCsvStringifierParams' with 'exactOptionalPropertyTypes: true'. Consider adding 'undefined' to the types of the target's properties.
  Types of property 'fieldDelimiter' are incompatible.
    Type 'string | undefined' is not assignable to type 'string'.
      Type 'undefined' is not assignable to type 'string'.

 40         const csvStringifier = this.csvStringifierFactory.createObjectCsvStringifier({
                                                                                         ~
 41             header: params.header,
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
... 
 45             alwaysQuote: params.alwaysQuote
    ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 46         });