update solhint command to 6.x config customization syntax

Author: gonzaotc

package.json

@@ -19,8 +19,9 @@
     "lint:fix": "npm run lint:js:fix && npm run lint:sol:fix",
     "lint:js": "prettier --log-level warn --ignore-path .gitignore '**/*.{js,ts}' --check && eslint .",
     "lint:js:fix": "prettier --log-level warn --ignore-path .gitignore '**/*.{js,ts}' --write && eslint . --fix",
-    "lint:sol": "prettier --log-level warn --ignore-path .gitignore '{contracts,test}/**/*.sol' --check && solhint '{contracts,test}/**/*.sol'",
+    "lint:sol": "prettier --log-level warn --ignore-path .gitignore '{contracts,test}/**/*.sol' --check && npm run solhint",
     "lint:sol:fix": "prettier --log-level warn --ignore-path .gitignore '{contracts,test}/**/*.sol' --write",
+    "solhint": "solhint --config solhint.config.js --noPoster '{contracts,test}/**/*.sol'",
     "clean": "hardhat clean && rimraf build contracts/build",
     "prepack": "scripts/prepack.sh",
     "generate": "scripts/generate/run.js",
@@ -100,7 +101,7 @@
     ],
     "*.sol": [
       "prettier --log-level warn --ignore-path .gitignore --check",
-      "solhint"
+      "solhint --config solhint.config.js --noPoster"
     ]
   }
 }