Update dependencies

Author: philipstanislaus

build/arrayToTree.js

@@ -35,16 +35,16 @@
   "dependencies": {},
   "devDependencies": {
     "@types/chai": "^4.2.7",
-    "@types/mocha": "^5.2.7",
+    "@types/mocha": "^8.2.0",
     "chai": "^4.1.2",
     "coveralls": "^3.0.9",
     "istanbul": "^0.4.5",
-    "mocha": "^7.0.0",
+    "mocha": "^8.2.1",
     "mocha-lcov-reporter": "^1.3.0",
     "remap-istanbul": "^0.13.0",
-    "tslint": "^5.20.1",
+    "tslint": "^6.1.3",
     "tslint-config-standard": "^9.0.0",
-    "typescript": "^3.7.5",
+    "typescript": "^4.1.3",
     "uglify-js": "^3.7.5"
   },
   "scripts": {