chore(deps): update angular monorepo to v21

Author: renovate[bot]

package.json

@@ -148,11 +148,11 @@
   "homepage": "https://github.com/esm-bundle/angular__cdk#readme",
   "devDependencies": {
     "@angular/cdk": "15.2.9",
-    "@angular/common": "19.2.20",
-    "@angular/compiler": "19.2.20",
-    "@angular/compiler-cli": "19.2.20",
-    "@angular/core": "19.2.20",
-    "@angular/forms": "19.2.20",
+    "@angular/common": "21.2.9",
+    "@angular/compiler": "21.2.9",
+    "@angular/compiler-cli": "21.2.9",
+    "@angular/core": "21.2.9",
+    "@angular/forms": "21.2.9",
     "@rollup/plugin-babel": "7.0.0",
     "concurrently": "9.2.1",
     "husky": "9.1.7",