Caching on GHES (#452)

* add support for ghes caching

* fix licesnses

* work on resolving comments

* change internal error to warning

* fix warning for internal errors

* update version

package.json

@@ -1,6 +1,6 @@
 {
   "name": "setup-node",
-  "version": "2.0.0",
+  "version": "3.1.0",
   "private": true,
   "description": "setup node action",
   "main": "lib/setup-node.js",
@@ -23,7 +23,7 @@
   "author": "GitHub",
   "license": "MIT",
   "dependencies": {
-    "@actions/cache": "^1.0.8",
+    "@actions/cache": "^2.0.0",
     "@actions/core": "^1.6.0",
     "@actions/exec": "^1.1.0",
     "@actions/github": "^1.1.0",