chore(deps): update dependency eslint to v9 (#11601)

* chore(deps): update dependency eslint to v9

* chore: migrate to eslint flat config files

---------

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: Daniel Dietzler <mail@ddietzler.dev>

e2e/package.json

@@ -19,6 +19,8 @@
   "author": "",
   "license": "GNU Affero General Public License version 3",
   "devDependencies": {
+    "@eslint/eslintrc": "^3.1.0",
+    "@eslint/js": "^9.8.0",
     "@immich/cli": "file:../cli",
     "@immich/sdk": "file:../open-api/typescript-sdk",
     "@playwright/test": "^1.44.1",
@@ -31,11 +33,12 @@
     "@typescript-eslint/eslint-plugin": "^8.0.0",
     "@typescript-eslint/parser": "^8.0.0",
     "@vitest/coverage-v8": "^2.0.5",
-    "eslint": "^8.57.0",
+    "eslint": "^9.0.0",
     "eslint-config-prettier": "^9.1.0",
     "eslint-plugin-prettier": "^5.1.3",
     "eslint-plugin-unicorn": "^55.0.0",
     "exiftool-vendored": "^28.0.0",
+    "globals": "^15.9.0",
     "jose": "^5.6.3",
     "luxon": "^3.4.4",
     "oidc-provider": "^8.5.1",