chore(deps): update dependency eslint to v9

Author: renovate[bot]

package.json

@@ -103,7 +103,7 @@
     "@typescript-eslint/eslint-plugin": "^8.13.0",
     "@typescript-eslint/typescript-estree": "^8.13.0",
     "conventional-changelog-conventionalcommits": "^8.0.0",
-    "eslint": "8.57.1",
+    "eslint": "9.20.1",
     "eslint-config-mitodl": "^2.1.0",
     "eslint-config-prettier": "^10.0.0",
     "eslint-import-resolver-typescript": "^3.6.1",