upgrade filenamify to ^4.1.0 in botbuilder (#995)

Author: stevengum

libraries/botbuilder/package-lock.json

@@ -20,18 +20,16 @@
   "main": "./lib/index.js",
   "typings": "./lib/index.d.ts",
   "dependencies": {
-    "@types/filenamify": "^2.0.1",
     "@types/node": "^10.12.18",
     "botbuilder-core": "~4.1.6",
     "botframework-connector": "~4.1.6",
-    "filenamify": "^2.0.0",
+    "filenamify": "^4.1.0",
     "fs-extra": "^7.0.1"
   },
   "devDependencies": {
     "@types/mocha": "^2.2.47",
     "assert": "^1.4.1",
     "chatdown": "^1.0.2",
-    "codelyzer": "^4.1.0",
     "mocha": "^5.2.0",
     "nock": "^10.0.3",
     "nyc": "^11.4.1",