Remove dependency on strings.js 3.3.3 due to vulnerability report (#7834)

* Removing string.js since it isn't used and has a security vulnerability

* Removing string.js in favor of native methods

* Updated package-lock files for those that dropped string.js

* Bumped versions of affected packages

Author: pjquirk

Tasks/ANTV1/package-lock.json

@@ -16,7 +16,7 @@
     "author": "Microsoft Corporation",
     "version": {
         "Major": 1,
-        "Minor": 137,
+        "Minor": 139,
         "Patch": 0
     },
     "demands": [

Tasks/ANTV1/task.json

@@ -16,7 +16,7 @@
   "author": "Microsoft Corporation",
   "version": {
     "Major": 1,
-    "Minor": 137,
+    "Minor": 139,
     "Patch": 0
   },
   "demands": [