npm package grunt upgrade to new minor version(1.6.1)

Author: glo17680

package.json.sample

@@ -10,7 +10,7 @@
   "homepage": "https://magento.com/",
   "devDependencies": {
     "glob": "~8.1.0",
-    "grunt": "~1.5.2",
+    "grunt": "~1.6.1",
     "grunt-banner": "~0.6.0",
     "grunt-continue": "~0.1.0",
     "grunt-contrib-clean": "~2.0.0",