Bump eslint from 6.8.0 to 8.29.0 in /example/zoo

Bumps [eslint](https://github.com/eslint/eslint) from 6.8.0 to 8.29.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/main/CHANGELOG.md)
- [Commits](eslint/eslint@v6.8.0...v8.29.0)

---
updated-dependencies:
- dependency-name: eslint
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

example/zoo/package.json

@@ -2,7 +2,7 @@
   "name": "nginx-opentracing-zoo",
   "version": "1.0.0",
   "devDependencies": {
-    "eslint": "^6.2.1",
+    "eslint": "^8.29.0",
     "eslint-config-airbnb-base": "^14.0.0",
     "eslint-plugin-import": "^2.18.2"
   },