flake.lock: Updating 'revealjs (hakimel/reveal.js)' - a4b7f9df -> db2523db (#539)

### Changes for revealjs

On branch: master
Commits: a4b7f9dff7...db2523db27

- [07a6cf12](07a6cf1249) fix empty slide bug when all slides in a stack are hidden via data-visibility
- [cd948d41](cd948d4136) Notes plugin: notes from data-notes attribute were not shown
- [db2523db](db2523db27) add support for aside element notes inside of fragments (fixes [hakimel/reveal.js⁠#3478](http://r.duckduckgo.com/l/?uddg=https://github.com/hakimel/reveal.js/issues/3478))

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

flake.lock

@@ -327,11 +327,11 @@
     "revealjs": {
       "flake": false,
       "locked": {
-        "lastModified": 1694600616,
-        "narHash": "sha256-R599Zdw9YzID7CRzWRcasz+ZZvZiagBFsuDWUvnNX4o=",
+        "lastModified": 1695108593,
+        "narHash": "sha256-1Rb3w4Mpzv81pw7FaZHdQULK6+9oZIzeQ6uCD4PvjJM=",
         "owner": "hakimel",
         "repo": "reveal.js",
-        "rev": "a4b7f9dff7ef360afdb6d0cb53fd89063cbe0b66",
+        "rev": "db2523db277bea632c218a7d836f27079a1be7f9",
         "type": "github"
       },
       "original": {