Bump node to 16 and npm (#575)

* Bump engines required to node 16 and npm 8

* Bump @types/node to 16
The dep on node 14.18 will get cleaned up once we bump electron

* Modify build.yml to build with node 16 and npm 8

* Update requirements in README.md

* Remove install step for npm 8
npm v8.1.2 is included in node v16

* Rename install step

* Fixed typo

package.json

@@ -26,7 +26,7 @@
   "devDependencies": {
     "@fluffy-spoon/substitute": "^1.202.0",
     "@types/jasmine": "^3.7.6",
-    "@types/node": "^14.17.1",
+    "@types/node": "^16.11.12",
     "concurrently": "^6.1.0",
     "form-data": "4.0.0",
     "jasmine": "^3.7.0",
@@ -60,7 +60,7 @@
     "@bitwarden/jslib-node": "file:node"
   },
   "engines": {
-    "node": "~14",
-    "npm": "~7"
+    "node": "~16",
+    "npm": "~8"
   }
 }