flake.lock: Updating 'revealjs (hakimel/reveal.js)' - a815c7d2 -> 6510916b (#374)

### Changes for revealjs

On branch: master
Commits: a815c7d269...6510916b9f

- [b5fb6da4](b5fb6da46e) Missing lang attribute
- [a0924999](a092499981) Update js.yml
- [d146c1dd](d146c1ddc1) adds jump-to-slide, press G to activate
- [79e9fdf1](79e9fdf13f) add jump-to-slide to help overlay, style tweaks
- [282680e1](282680e163) delay slide jumps a few ms
- [b648a560](b648a56009) update hljs 10 > 11.7, fix perf issue in demo presentation caused by auto lang detection
- [efcc8627](efcc86273b) jump-to-slide is 1-indexed, falls back on word search
- [60769db4](60769db4ee) better selection color contrast for black theme
- [fb1fecd7](fb1fecd754) enforce a min length on jump to slide search queries
- [3301d303](3301d3036e) fix incorrect condition for jump-to-slide
- [4a1b91a9](4a1b91a9c8) jump to slide tweak
- [e0ef8db5](e0ef8db54b) fix security alerts by upgrading glob-parent [hakimel/reveal.js⁠#3343](http://r.duckduckgo.com/l/?uddg=https://github.com/hakimel/reveal.js/issues/3343)

Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

flake.lock

@@ -323,11 +323,11 @@
     "revealjs": {
       "flake": false,
       "locked": {
-        "lastModified": 1673342689,
-        "narHash": "sha256-0fNFPuA8ZSUcXzqCs/Yyl0mpnN03BV0EUWuB5weR6Qw=",
+        "lastModified": 1674035434,
+        "narHash": "sha256-z+XxEX+GVcnKt4GAollnHTEHA8YkQfVOLLUuHka6EtA=",
         "owner": "hakimel",
         "repo": "reveal.js",
-        "rev": "a815c7d2696f2d68d767217db3aaf180ef92c47f",
+        "rev": "6510916b9f55a8f3110030bcdd1aee1b7fb77b6f",
         "type": "github"
       },
       "original": {