Update to Babel 7.9 (#8681)

Author: ianschmitz

packages/babel-preset-react-app/package.json

@@ -21,19 +21,19 @@
     "test.js"
   ],
   "dependencies": {
-    "@babel/core": "7.8.7",
+    "@babel/core": "7.9.0",
     "@babel/plugin-proposal-class-properties": "7.8.3",
     "@babel/plugin-proposal-decorators": "7.8.3",
     "@babel/plugin-proposal-nullish-coalescing-operator": "7.8.3",
     "@babel/plugin-proposal-numeric-separator": "7.8.3",
-    "@babel/plugin-proposal-optional-chaining": "7.8.3",
-    "@babel/plugin-transform-flow-strip-types": "7.8.3",
+    "@babel/plugin-proposal-optional-chaining": "7.9.0",
+    "@babel/plugin-transform-flow-strip-types": "7.9.0",
     "@babel/plugin-transform-react-display-name": "7.8.3",
-    "@babel/plugin-transform-runtime": "7.8.3",
-    "@babel/preset-env": "7.8.7",
-    "@babel/preset-react": "7.8.3",
-    "@babel/preset-typescript": "7.8.3",
-    "@babel/runtime": "7.8.7",
+    "@babel/plugin-transform-runtime": "7.9.0",
+    "@babel/preset-env": "7.9.0",
+    "@babel/preset-react": "7.9.1",
+    "@babel/preset-typescript": "7.9.0",
+    "@babel/runtime": "7.9.0",
     "babel-plugin-macros": "2.8.0",
     "babel-plugin-transform-react-remove-prop-types": "0.4.24"
   }