chore(deps): update dependency eslint to v9

Author: renovate[bot]

frontends/main/package.json

@@ -50,7 +50,7 @@
     "@types/react-dom": "^19",
     "@types/react-slick": "^0.23.13",
     "@types/slick-carousel": "^1",
-    "eslint": "8.57.1",
+    "eslint": "9.30.1",
     "eslint-config-next": "^14.2.7",
     "http-proxy-middleware": "^3.0.0",
     "jest": "^29.7.0",

frontends/package.json

@@ -48,7 +48,7 @@
     "@typescript-eslint/eslint-plugin": "^8.0.0",
     "@typescript-eslint/typescript-estree": "^8.0.0",
     "cross-fetch": "^4.0.0",
-    "eslint": "8.57.1",
+    "eslint": "9.30.1",
     "eslint-config-mitodl": "^2.1.0",
     "eslint-config-prettier": "^10.0.0",
     "eslint-import-resolver-typescript": "^4.0.0",