Update ESLint & grunt-wordpress

Author: mgol

.eslintrc.json

@@ -5,16 +5,12 @@
 
   "reportUnusedDisableDirectives": true,
 
-  "parserOptions": {
-    "ecmaVersion": 2018
-  },
-
   "env": {
-    "es6": true,
+    "es2023": true,
     "node": true
   },
 
   "rules": {
-    "strict": ["error", "global"]
+    "strict": [ "error", "global" ]
   }
 }

package-lock.json

@@ -23,7 +23,7 @@
     "async": "^3.2.0",
     "cheerio": "^1.0.0-rc.12",
     "grunt-check-modules": "^1.1.0",
-    "grunt-wordpress": "^2.1.3",
+    "grunt-wordpress": "^2.1.4",
     "he": "^1.2.0",
     "highlight.js": "^10.7.2",
     "marked": "^4.0.0",
@@ -36,9 +36,9 @@
     "build-example": "grunt build"
   },
   "devDependencies": {
-    "eslint": "^7.0.0",
-    "eslint-config-jquery": "3.0.0",
-    "grunt": "1.5.3",
+    "eslint": "^8.53.0",
+    "eslint-config-jquery": "3.0.2",
+    "grunt": "^1.6.1",
     "qunit": "^2.20.0"
   },
   "keywords": [