build(deps-dev): Bump eslint from 8.7.0 to 9.26.0 in /consumers/online

Bumps [eslint](https://github.com/eslint/eslint) from 8.7.0 to 9.26.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/v9.26.0/CHANGELOG.md)
- [Commits](eslint/eslint@v8.7.0...v9.26.0)

---
updated-dependencies:
- dependency-name: eslint
  dependency-version: 9.26.0
  dependency-type: direct:development
...

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

Author: dependabot[bot]

consumers/online/package.json

@@ -18,7 +18,7 @@
     "@typescript-eslint/parser": "^5.10.0",
     "aws-cdk": "2.157.0",
     "esbuild": "0.25.0",
-    "eslint": "8.7.0",
+    "eslint": "9.26.0",
     "eslint-config-prettier": "^8.3.0",
     "eslint-plugin-header": "^3.1.1",
     "eslint-plugin-prettier": "^4.0.0",