Update dependencies for version 18.0.0-rc1

package.json

@@ -10,7 +10,7 @@
     "@vaadin/vaadin-charts": "^7.0.0",
     "@vaadin/vaadin-confirm-dialog": "^1.3.0",
     "@vaadin/vaadin-cookie-consent": "^1.2.0",
-    "@vaadin/vaadin-core": "^18.0.0-beta3",
+    "@vaadin/vaadin-core": "^18.0.0-rc1",
     "@vaadin/vaadin-crud": "^1.3.0",
     "@vaadin/vaadin-grid-pro": "^2.2.2",
     "@vaadin/vaadin-rich-text-editor": "^1.3.0"