Override transitive dependency version to address security issue (#249)

* Override transitive dependency version to address security issue

* Update handlebars dependency version constraint

Author: soumeh01

package-lock.json

@@ -191,7 +191,8 @@
     },
     "tar@^7.0.0": "^7.5.10",
     "immutable@<=4.3.8": "^4.3.8",
-    "@tootallnate/once@<=3.0.1": "^3.0.1"
+    "@tootallnate/once@<=3.0.1": "^3.0.1",
+    "handlebars@<=4.7.8": "^4.7.9"
   },
   "contributes": {
     "icons": {