Update dependency @angular/compiler to v21.2.9 (#19074)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

package.json

@@ -42,7 +42,7 @@
     "bin"
   ],
   "dependencies": {
-    "@angular/compiler": "21.2.8",
+    "@angular/compiler": "21.2.9",
     "@babel/code-frame": "8.0.0-rc.3",
     "@babel/parser": "8.0.0-rc.3",
     "@babel/types": "8.0.0-rc.3",