Update angular monorepo to v21 (#10)

Co-authored-by: supply-chain-sentinel[bot] <284242157+supply-chain-sentinel[bot]@users.noreply.github.com>

Author: supply-chain-sentinel[bot]

package.json

@@ -34,8 +34,8 @@
     "ionic4"
   ],
   "peerDependencies": {
-    "@angular/common": "^7.2.0",
-    "@angular/core": "^7.2.0",
+    "@angular/common": "^7.2.0 || ^21.0.0",
+    "@angular/core": "^7.2.0 || ^21.0.0",
     "@ionic/angular": "^4.0.0"
   }
 }