Bump jspdf from 2.3.1 to 2.4.0

Bumps [jspdf](https://github.com/MrRio/jsPDF) from 2.3.1 to 2.4.0.
- [Release notes](https://github.com/MrRio/jsPDF/releases)
- [Changelog](https://github.com/MrRio/jsPDF/blob/master/RELEASE.md)
- [Commits](parallax/jsPDF@v2.3.1...v2.4.0)

---
updated-dependencies:
- dependency-name: jspdf
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>