Fix imports for pdfjs-dist path changes

The es5 build is now called legacy

rollup.config.js

@@ -192,7 +192,7 @@ Dependencies:
                 {src: 'assets/silent-check-sso.html', dest:'dist'},
                 {src: 'assets/dbp-signature-maintenance.html', dest:'dist'},
                 {
-                    src: await getPackagePath('pdfjs-dist', 'es5/build/pdf.worker.js'),
+                    src: await getPackagePath('pdfjs-dist', 'legacy/build/pdf.worker.js'),
                     dest: 'dist/' + await getDistPath(pkg.name, 'pdfjs'),
                     // enable signatures in pdf preview
                     transform: (contents) => replaceAll(contents.toString(), '"Sig"', '"Sig-patched-show-anyway"')

src/dbp-pdf-preview.js

@@ -7,7 +7,7 @@ import DBPLitElement from '@dbp-toolkit/common/dbp-lit-element';
 import {MiniSpinner, Icon} from '@dbp-toolkit/common';
 import * as commonUtils from "@dbp-toolkit/common/utils";
 import * as commonStyles from '@dbp-toolkit/common/styles';
-import pdfjs from 'pdfjs-dist/es5/build/pdf.js';
+import pdfjs from 'pdfjs-dist/legacy/build/pdf.js';
 import {name as pkgName} from './../package.json';
 import {readBinaryFileContent} from './utils.js';