Bump @angular/forms from 19.2.14 to 20.1.2 in /web_embedding/ng-flutter (#2699)

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Author: dependabot[bot]

web_embedding/ng-flutter/package.json

@@ -16,7 +16,7 @@
     "@angular/common": "^19.0.0",
     "@angular/compiler": "^20.0.6",
     "@angular/core": "^20.0.3",
-    "@angular/forms": "^19.0.1",
+    "@angular/forms": "^20.1.2",
     "@angular/material": "^20.1.0",
     "@angular/platform-browser": "^20.0.3",
     "@angular/platform-browser-dynamic": "^20.1.0",