Update babel monorepo

Author: renovate-bot

package.json

@@ -13,9 +13,9 @@
   "dependencies": {
     "@babel/core": "^7.1.6",
     "@babel/plugin-syntax-dynamic-import": "7.2.0",
-    "@babel/plugin-transform-flow-strip-types": "7.2.3",
+    "@babel/plugin-transform-flow-strip-types": "7.4.0",
     "@babel/polyfill": "^7.0.0",
-    "@babel/preset-env": "7.3.1",
+    "@babel/preset-env": "7.4.3",
     "@babel/preset-react": "7.0.0",
     "@gfx/zopfli": "^1.0.10",
     "@rtsao/plugin-proposal-class-properties": "7.0.1-patch.1",