Initial adaptation to embla 7.

package.json

@@ -23,7 +23,7 @@
     "crypto": "^1.0.1",
     "custom-card-helpers": "^1.9.0",
     "date-fns": "^2.28.0",
-    "embla-carousel": "^6.2.0",
+    "embla-carousel": "^7.0.0-rc01",
     "embla-carousel-wheel-gestures": "^2.1.1",
     "home-assistant-js-websocket": "^7.1.0",
     "keycharm": "^0.4.0",