Release: v2.0.0 (#355)

## What's Changed
* Add support for Direct Workload Identity auth by @sethvargo in
#348
* Add protection for release branches by @sethvargo in
#351
* Make auth universe-aware by @sethvargo in
#352
* Fix some examples to include project_id by @sethvargo in
#353


**Full Changelog**:
v1.2.0...0a2edc1

Author: google-github-actions-bot

dist/main/index.js

@@ -1,6 +1,6 @@
 {
   "name": "@google-github-actions/auth",
-  "version": "1.2.0",
+  "version": "2.0.0",
   "description": "Authenticate to Google Cloud using OIDC tokens or JSON service account keys.",
   "main": "dist/main/index.js",
   "scripts": {