Upgrade handlebars (#8675)

* Upgrade Handlebars to 4.3.0

* Upgrade Handlebars to the latest version

package.json

@@ -11,8 +11,9 @@
     "bootbox": "3.2.0",
     "bootstrap": "v3.4.1",
     "chart.js": "2.9.3",
+    "eslint-plugin-lodash": "^6.0.0",
     "favcount": "https://github.com/chrishunt/favcount",
-    "handlebars": "^4.1.2",
+    "handlebars": "^4.3.0",
     "highlight.js": "https://github.com/highlightjs/highlight.js",
     "htmlparser": "https://github.com/tautologistics/node-htmlparser",
     "intersection-observer": "^0.5.1",