chore(deps): bump eslint from 7.32.0 to 8.6.0 in /tools/integration-test

Bumps [eslint](https://github.com/eslint/eslint) from 7.32.0 to 8.6.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/main/CHANGELOG.md)
- [Commits](eslint/eslint@v7.32.0...v8.6.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

tools/integration-test/package.json

@@ -20,7 +20,7 @@
     "@types/jest": "^27.0.1",
     "@types/node": "17.0.8",
     "aws-cdk": "1.137.0",
-    "eslint": "^7.23.0",
+    "eslint": "^8.6.0",
     "eslint-plugin-custom-rules": "file:../eslint",
     "jest": "27.4.7",
     "prettier": "^2.2.1",