🔖(minor) release 4.8.0

Added:
- ✨(backend) add a is_first_connection flag to the User model
- ✨(frontend) add onboarding modal with help menu button

Changed:
- ♿(frontend) localize LaGaufre label fallback in Docs
- ✨(backend) add a migration cleaning on-boarding
  document accesses
- ⬆️(frontend) upgrade Next.js to v16
- ♿️(frontend) fix aria-label and landmark on document
  banner state
- 🌐(i18n) add "new window" translation key for waffle
  aria-label

Fixed:
- 🐛(backend) create a link_trace record for on-boarding
  documents
- 🐛(backend) manage race condition when creating sandbox
  document
- 🐛(frontend) fix flickering left panel
- ♿️(frontend) improve doc tree keyboard navigation

src/frontend/package.json

@@ -1,6 +1,6 @@
 {
   "name": "impress",
-  "version": "4.7.0",
+  "version": "4.8.0",
   "private": true,
   "repository": "https://github.com/suitenumerique/docs",
   "author": "DINUM",