Bump jspdf from 3.0.2 to 4.0.0 (#241)

Bumps [jspdf](https://github.com/parallax/jsPDF) from 3.0.2 to 4.0.0.
- [Release notes](https://github.com/parallax/jsPDF/releases)
- [Changelog](https://github.com/parallax/jsPDF/blob/master/RELEASE.md)
- [Commits](https://github.com/parallax/jsPDF/compare/v3.0.2...v4.0.0)

---
updated-dependencies:
- dependency-name: jspdf
  dependency-version: 4.0.0
  dependency-type: direct:production
...

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package.json

@@ -19,7 +19,7 @@
     "file-saver": "^2.0.5",
     "javascript-natural-sort": "^0.7.1",
     "js-cookie": "^3.0.5",
-    "jspdf": "^3.0.2",
+    "jspdf": "^4.0.0",
     "lunr": "^2.3.9",
     "lunr-languages": "^1.4.0",
     "md5": "^2.3.0",