Bump cypress and vite (#970)

The latest Cypress 14 support the latest Vite 6, so this PR bumps both

## Launch Checklist

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checklist. -->


 - [ ] Briefly describe the changes in this PR.
 - [ ] Link to related issues.
- [ ] Include before/after visuals or gifs if this PR includes visual
changes.
 - [ ] Write tests for all new functionality.
 - [X] Add an entry to `CHANGELOG.md` under the `## main` section.

Author: birkskyum

CHANGELOG.md

@@ -8,6 +8,7 @@
 - Update Protomaps Light gallery style to v4
 - Add support to edit local files on the file system if supported by the browser
 - Upgrade to MapLibre LG JS v5
+- Upgrade Vite 6 and Cypress 14 ([#970](https://github.com/maplibre/maputnik/pull/970))
 - _...Add new stuff here..._
 
 ### 🐞 Bug fixes