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>

cli/package.json

@@ -13,6 +13,8 @@
     "cli"
   ],
   "devDependencies": {
+    "@eslint/eslintrc": "^3.1.0",
+    "@eslint/js": "^9.8.0",
     "@immich/sdk": "file:../open-api/typescript-sdk",
     "@types/byte-size": "^8.1.0",
     "@types/cli-progress": "^3.11.0",
@@ -25,10 +27,11 @@
     "byte-size": "^9.0.0",
     "cli-progress": "^3.12.0",
     "commander": "^12.0.0",
-    "eslint": "^8.56.0",
+    "eslint": "^9.0.0",
     "eslint-config-prettier": "^9.1.0",
     "eslint-plugin-prettier": "^5.1.3",
     "eslint-plugin-unicorn": "^55.0.0",
+    "globals": "^15.9.0",
     "mock-fs": "^5.2.0",
     "prettier": "^3.2.5",
     "prettier-plugin-organize-imports": "^4.0.0",