Bump html-to-pdfmake from 2.5.17 to 2.5.20 in /CSETWebNg

Bumps [html-to-pdfmake](https://github.com/Aymkdn/html-to-pdfmake) from 2.5.17 to 2.5.20.
- [Release notes](https://github.com/Aymkdn/html-to-pdfmake/releases)
- [Commits](Aymkdn/html-to-pdfmake@v2.5.17...v2.5.20)

---
updated-dependencies:
- dependency-name: html-to-pdfmake
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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