Bump reveal.js from 5d131ce to 16f6633

Bumps [reveal.js](https://github.com/hakimel/reveal.js) from `5d131ce` to `16f6633`.
- [Release notes](https://github.com/hakimel/reveal.js/releases)
- [Commits](hakimel/reveal.js@5d131ce...16f6633)

---
updated-dependencies:
- dependency-name: reveal.js
  dependency-type: direct:production
...

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