test(angular): Bump TS version to 5.9.0 in Angular 20 e2e test (#17605)

Angular 21 will only support TS 5.9.0 or greater. This breaking change
was introduced in the [`next.3` preview
release](https://github.com/angular/angular/releases/tag/21.0.0-next.3)
and was flagged in our Angular canary test. Bumping the TS version
should be safe here since it will be required by NG21 and still fits
into the [compatible range of
NG20](https://angular.dev/reference/versions).

closes #17603

Author: Lms24

dev-packages/e2e-tests/test-applications/angular-20/package.json

@@ -44,9 +44,17 @@
     "karma-coverage": "~2.2.0",
     "karma-jasmine": "~5.1.0",
     "karma-jasmine-html-reporter": "~2.1.0",
-    "typescript": "~5.8.3"
+    "typescript": "~5.9.0"
   },
   "volta": {
     "extends": "../../package.json"
+  },
+  "sentryTest": {
+    "optionalVariants": [
+      {
+        "build-command": "pnpm test:build-canary",
+        "label": "angular (canary)"
+      }
+    ]
   }
 }