fix(deps): update dependency @ionic/core to v7

Author: renovate[bot]

apps/ionic-demo/package.json

@@ -26,7 +26,7 @@
         "@capacitor/keyboard": "^4.1.0",
         "@capacitor/status-bar": "^4.1.1",
         "@ionic/angular": "^6.4.1",
-        "@ionic/core": "^6.4.1",
+        "@ionic/core": "^7.0.0",
         "ionicons": "^6.0.4",
         "ng-particles": "^3.9.3",
         "rxjs": "~7.8.0",