Allow node 12 and test it (#9907)

.circleci/config.yml

@@ -34,7 +34,7 @@ jobs:
   build:
     working_directory: ~/babel
     docker:
-      - image: circleci/node:11
+      - image: circleci/node:12
     steps:
       - checkout
       - restore-cache: *restore-yarn-cache

.travis.yml

@@ -5,6 +5,7 @@ cache:
   yarn: true
 node_js:
   # We test the latest version on circleci
+  - '11'
   - '10'
   - '8'
   - '6'

package.json

@@ -73,7 +73,7 @@
     "@lerna/**/@lerna/collect-updates": "https://github.com/nicolo-ribaudo/lerna.git#babel-collect-updates"
   },
   "engines": {
-    "node": ">= 6.9.0 < 12.0.0",
+    "node": ">= 6.9.0 < 13.0.0",
     "npm": ">= 3.x <= 6.x",
     "yarn": ">=0.27.5 || >=1.0.0-20170811"
   },