chore(package): update ember-cli-dotenv to version 2.0.0

Author: greenkeeper[bot]

package.json

@@ -38,7 +38,7 @@
     "ember-cli-deploy-s3-index": "1.0.0",
     "ember-cli-deploy-sentry": "^0.5.2",
     "ember-cli-deploy-slack": "1.0.0",
-    "ember-cli-dotenv": "1.2.0",
+    "ember-cli-dotenv": "2.0.0",
     "ember-cli-eslint": "^4.0.0",
     "ember-cli-flash": "1.5.0",
     "ember-cli-htmlbars": "^2.0.1",