Release: v2.1.8 (#467)

## What's Changed
* Update TROUBLESHOOTING.md by @sethvargo in
#457
* fix: add runs-on to README.md example by @lbarthon in
#460
* security: bump undici from 5.28.4 to 5.28.5 in the npm_and_yarn group
by @dependabot in #463
* Update deps by @sethvargo in
#466

## New Contributors
* @lbarthon made their first contribution in
#460

**Full Changelog**:
v2.1.7...v2.1.8

Author: google-github-actions-bot

dist/main/index.js

@@ -1,6 +1,6 @@
 {
   "name": "@google-github-actions/auth",
-  "version": "2.1.7",
+  "version": "2.1.8",
   "description": "Authenticate to Google Cloud using OIDC tokens or JSON service account keys.",
   "main": "dist/main/index.js",
   "scripts": {