fix: downgrade babel to make jest happy

Author: mike-north

package.json

@@ -31,7 +31,7 @@
     "travis-deploy-once": "travis-deploy-once"
   },
   "devDependencies": {
-    "@babel/core": "^7.1.5",
+    "babel-core": "^7.0.0",
     "@babel/preset-env": "^7.1.5",
     "@babel/preset-react": "^7.0.0",
     "@mike-works/js-lib-renovate-config": "2.0.0",
@@ -40,8 +40,8 @@
     "@types/react-dom": "16.0.9",
     "@types/sequelize": "4.27.30",
     "babel-eslint": "10.0.1",
+    "babel-jest": "^23.6.0",
     "babel-loader": "8.0.4",
-    "babel-preset-env": "1.7.0",
     "compression-webpack-plugin": "2.0.0",
     "css-loader": "1.0.1",
     "eslint": "5.9.0",
@@ -53,16 +53,17 @@
     "file-loader": "2.0.0",
     "html-webpack-plugin": "^4.0.0-beta.4",
     "jest": "23.6.0",
-    "jest-cli": "23.6.0",
+    "jest-cli": "^23.6.0",
     "muicss": "0.9.41",
     "node-sass": "^4.10.0",
     "nodemon": "1.18.6",
     "qrcode-reader": "1.0.4",
     "react": "16.6.1",
     "react-dom": "16.6.1",
-    "react-hot-loader": "4.3.12",
+    "react-hot-loader": "^4.3.12",
     "react-router-dom": "4.3.1",
     "react-test-renderer": "16.6.1",
+    "regenerator-runtime": "^0.12.1",
     "sass-loader": "^7.1.0",
     "style-ext-html-webpack-plugin": "3.4.7",
     "style-loader": "^0.23.1",