release(benchpress): bump version to v0.2.1 and update @angular/core peer dependency (#37676)

Updates the version of `@angular/benchpress` to the next patch
version. i.e. `v0.2.1`. Additionally, the peer dependency
on `@angular/core` has been updated to be satisifed with
Angular v10 and v11.

Benchpress should be at least compatibe with the next two major
versions as it does not rely on any deprecated API from `@angular/core`.

PR Close #37676

packages/benchpress/package.json

@@ -1,12 +1,12 @@
 {
   "name": "@angular/benchpress",
-  "version": "0.2.0",
+  "version": "0.2.1",
   "description": "Benchpress - a framework for e2e performance tests",
   "main": "index.js",
   "typings": "./index.d.ts",
   "strictNullChecks": true,
   "dependencies": {
-    "@angular/core": "^9.0.0",
+    "@angular/core": "^10.0.0-0 || ^11.0.0",
     "reflect-metadata": "^0.1.13"
   },
   "repository": {