Bump reveal.js from 3.9.2 to 4.1.3

[dependabot-preview]

Bumps reveal.js from 3.9.2 to 4.1.3.

Release notes

Sourced from reveal.js's releases.

4.1.2

Changes

• Adds support for data-auto-animate-restart and data-auto-animate-id. These properties give you finer control over which slides that should auto-animate between each other (@​coffeenotfound in #2896).
• Theme properties are now available as CSS variables, making them easy to override. Full list of variables (#2740 + #2968). Here's an example you can drop into your presentation's HTML:

<style type="text/css">
:root {
  --r-background-color: indigo;
  --r-main-color: #f5f5f5;
  --r-main-font: monospace;
}
</style>

Fixes

• Markdown enabled speaker notes (<aside class="notes" data-markdown>) are no longer visible on-slide.

4.1.1

Mostly bug fixes and enhancements 🐛

Changes

• Adds support for Node.js 16.
• data-background-image now accepts multiple images (#2940).
• New Markdown config option animateLists — automatically turns all lists into stepped fragments (#2956).
• Reduce the tab size in code blocks from 8 to 2.
• More accurate calculation of which slide to jump to when clicking on the progress bar (#2836).
• Optimize DOM interactions and reduce forced layouts when exporting to PDF (#2843).

Fixes

• Video/audio inside of a fragment now stop playing when the fragment is hidden.
• Markdown is now split into individual slides by the default separator (---) as advertised.
• The r-fit-text layout helper now sizes text correctly in PDF exports.
• Fixes an issue where some slide-specific transitions were incorrectly overridden by the global transition setting.
• The has-dark-background helper class now works when using named colors for data-background-color (#2933).

4.1.0

Changes

• New: Add data-visibility="hidden" to a slide to hide it from view. Docs & examples
• New: Add the r-fit-text class to make a text node grow to be as large as possible without overflowing the slide. Docs & examples
• The configured slide width/height is now exposed as CSS variables (--slide-width/--slide-height).
• The shuffle config option now shuffles vertical slides as well.
• All themes now invert the text color based on the current slide background color.
• Include /css and /js in npm package.

Fixes

• Don't append #/ to the URL on first slide.
• Don't fill the progress bar when there's only one slide in a deck
• Correct slide count when using data-visibility="uncounted" (#2675)

... (truncated)

Commits

• See full diff in compare view

Dependabot will resolve any conflicts with this PR as long as you don't alter it yourself. You can also trigger a rebase manually by commenting @dependabot rebase.

If all status checks pass Dependabot will automatically merge this pull request.

---

Dependabot commands and options

You can trigger Dependabot actions by commenting on this PR:

• @dependabot rebase will rebase this PR
• @dependabot recreate will recreate this PR, overwriting any edits that have been made to it
• @dependabot merge will merge this PR after your CI passes on it
• @dependabot squash and merge will squash and merge this PR after your CI passes on it
• @dependabot cancel merge will cancel a previously requested merge and block automerging
• @dependabot reopen will reopen this PR if it is closed
• @dependabot close will close this PR and stop Dependabot recreating it. You can achieve the same result by closing it manually
• @dependabot ignore this major version will close this PR and stop Dependabot creating any more for this major version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this minor version will close this PR and stop Dependabot creating any more for this minor version (unless you reopen the PR or upgrade to it yourself)
• @dependabot ignore this dependency will close this PR and stop Dependabot creating any more for this dependency (unless you reopen the PR or upgrade to it yourself)
• @dependabot use these labels will set the current labels as the default for future PRs for this repo and language
• @dependabot use these reviewers will set the current reviewers as the default for future PRs for this repo and language
• @dependabot use these assignees will set the current assignees as the default for future PRs for this repo and language
• @dependabot use this milestone will set the current milestone as the default for future PRs for this repo and language
• @dependabot badge me will comment on this PR with code to add a "Dependabot enabled" badge to your readme

Additionally, you can set the following in your Dependabot dashboard:

• Update frequency (including time of day and day of week)
• Pull request limits (per update run and/or open at any time)
• Automerge options (never/patch/minor, and dev/runtime dependencies)
• Out-of-range updates (receive only lockfile updates, if desired)
• Security updates (receive only security updates, if desired)