Bump xxhash-addon from 1.5.0 to 2.0.3 in /plugins/push

Bumps [xxhash-addon](https://github.com/ktrongnhan/xxhash-addon) from 1.5.0 to 2.0.3.
- [Release notes](https://github.com/ktrongnhan/xxhash-addon/releases)
- [Changelog](https://github.com/ktrongnhan/xxhash-addon/blob/master/CHANGELOG.md)
- [Commits](ktrongnhan/xxhash-addon@v1.5.0...v2.0.3)

---
updated-dependencies:
- dependency-name: xxhash-addon
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

plugins/push/package.json

@@ -23,7 +23,7 @@
     "firebase-admin": "^12.1.0",
     "jsonwebtoken": "9.0.2",
     "node-forge": "1.3.1",
-    "xxhash-addon": "1.5.0"
+    "xxhash-addon": "2.0.3"
   },
   "private": true
 }