Bump jspdf from 1.5.3 to 2.3.1 in /frontend

Bumps [jspdf](https://github.com/MrRio/jsPDF) from 1.5.3 to 2.3.1.
- [Release notes](https://github.com/MrRio/jsPDF/releases)
- [Changelog](https://github.com/MrRio/jsPDF/blob/master/RELEASE.md)
- [Commits](parallax/jsPDF@v1.5.3...v2.3.1)

Signed-off-by: dependabot[bot] <support@github.com>

frontend/package.json

@@ -20,7 +20,7 @@
     "highcharts-vue": "^1.3.5",
     "html2pdf": "0.0.11",
     "html2pdf.js": "^0.9.2",
-    "jspdf": "^1.5.3",
+    "jspdf": "^2.3.1",
     "leaflet": "^1.7.1",
     "leaflet-easyprint": "^2.1.9",
     "marked": "^1.2.3",