chore(deps): update dependency eslint to v9

Change-Id: I5a30e08a00b316fdd08eaeff7362e42ef3ff7948
diff --git a/package.json b/package.json
index b985068..2637568 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
     "@lit/localize-tools": "0.7.2",
     "copy-webpack-plugin": "12.0.2",
     "css-loader": "7.0.0",
-    "eslint": "8.57.0",
+    "eslint": "9.0.0",
     "jest": "29.7.0",
     "jest-environment-jsdom": "29.7.0",
     "json5": "2.2.3",