Automation - Batch export Artboards to pdf

I do not create web assets so I have never used Photoshop's  Artboard feature so I do not know how the feature works.  On Windows and most likely on  Mac running a versions of macOS prior to version 10.1.5  Save As works from scripts as before 22.4 you do not need to use Save a Copy.  In any case you will need to Update your  Batch Action for Photoshop 22.4 to use "Save a Copy" or use a Script step to use a document saveAs.  I would think Export would ali work for it is designed to be used for creating web files. You can use this script to test if a saveAs script will work on you machine.  The script should save the current document as a PDF on your desktop.

If you can use a Script step in your action the action should work in Photoshop versions prior to 22.4 as well as versions 22.4 and up

                                                "SaveDesktopPdf.jsx"

var Name = activeDocument.name;
var pdfFile =  new File('~/Desktop/' + Name);
SaveAsPDF(pdfFile, 10);
function SaveAsPDF(saveFile, jpegQuality){
	var doc = activeDocument;
	pdfSaveOptions = new PDFSaveOptions();
	pdfSaveOptions.alphaChannels = true;
	pdfSaveOptions.embedColorProfile = true;
    pdfSaveOptions.encoding = PDFEncoding.JPEG;
    pdfSaveOptions.jpegQuality = jpegQuality;
	activeDocument.saveAs(File(saveFile+".pdf"), pdfSaveOptions, true,Extension.LOWERCASE);
}