Try out eslint v9

package.json

@@ -6,7 +6,7 @@
 	"private": true,
 	"scripts": {
 		"test": "npm run lint",
-		"lint": "eslint . --ext .js --ext .json",
+		"lint": "eslint .",
 		"start": "node Xiao.js"
 	},
 	"repository": {
@@ -50,7 +50,6 @@
 		"discord.js": "^13.17.1",
 		"dotenv": "^16.4.5",
 		"emoji-regex": "^10.3.0",
-		"eslint": "^8.57.0",
 		"fen-validator": "^2.0.1",
 		"font-finder": "^1.1.0",
 		"gifencoder": "^2.0.1",
@@ -58,7 +57,6 @@
 		"html-entities": "^2.5.2",
 		"image-to-ascii": "^3.2.0",
 		"ioredis": "^5.3.2",
-		"js-beautify": "^1.15.1",
 		"js-chess-engine": "^1.0.2",
 		"jszip": "^3.10.1",
 		"kuroshiro": "^1.2.0",
@@ -96,16 +94,9 @@
 		"zlib-sync": "^0.1.9"
 	},
 	"devDependencies": {
+		"@eslint/js": "^9.0.0",
+		"eslint": "^9.0.0",
 		"eslint-config-amber": "^2.0.4",
-		"eslint-plugin-json": "^3.1.0"
-	},
-	"eslintConfig": {
-		"extends": [
-			"amber",
-			"plugin:json/recommended"
-		],
-		"plugins": [
-			"json"
-		]
+		"eslint-plugin-jsonc": "^2.15.0"
 	}
 }