Update react to the latest version � (#640)

Summary:
## There have been updates to the *react* monorepo:

- The `dependency` [react](https://github.com/facebook/react) was updated from `16.11.0` to `16.12.0`.
- The `dependency` [react-dom](https://github.com/facebook/react) was updated from `16.11.0` to `16.12.0`.
- The `dependency` [react-test-renderer](https://github.com/facebook/react) was updated from `16.11.0` to `16.12.0`.

These versions are **not covered** by your **current version range**.

If you don’t accept this pull request, your project will work just like it did before. However, you might be missing out on a bunch of new features, fixes and/or performance improvements from the dependency update.

This monorepo update includes releases of one or more dependencies which all belong to the [react group definition](https://github.com/greenkeeperio/monorepo-definitions).

 ---

**Publisher:** [lunaruan](https://www.npmjs.com/~lunaruan)
**License:** MIT

[Find out more about this release](https://github.com/facebook/react).

 ---

<details>
  <summary>FAQ and help</summary>

  There is a collection of [frequently asked questions](https://greenkeeper.io/faq.html). If those don’t help, you can always [ask the humans behind Greenkeeper](https://github.com/greenkeeperio/greenkeeper/issues/new).
</details>

 ---

Your [Greenkeeper](https://greenkeeper.io) bot 🌴
Pull Request resolved: https://github.com/facebook/flipper/pull/640

Reviewed By: jknoxville

Differential Revision: D18527628

Pulled By: passy

fbshipit-source-id: 712f7be03091ee7f7de08408714cc599c9f1fe42

package.json

@@ -152,16 +152,16 @@
     "promisify-child-process": "^3.1.1",
     "prop-types": "^15.6.0",
     "query-string": "^6.2.0",
-    "react": "16.11.0",
+    "react": "16.12.0",
     "react-color": "^2.11.7",
     "react-debounce-render": "^5.0.0",
     "react-devtools-core": "^4.0.6",
-    "react-dom": "^16.11.0",
+    "react-dom": "^16.12.0",
     "react-emotion": "^9.2.6",
     "react-markdown": "^4.2.2",
     "react-player": "^1.14.1",
     "react-redux": "^7.1.1",
-    "react-test-renderer": "^16.11.0",
+    "react-test-renderer": "^16.12.0",
     "react-transition-group": "^4.3.0",
     "react-virtualized-auto-sizer": "^1.0.2",
     "react-window": "^1.3.1",

yarn.lock

@@ -7255,15 +7255,15 @@ react-devtools-core@^4.0.6:
     shell-quote "^1.6.1"
     ws "^7"
 
-react-dom@^16.11.0:
-  version "16.11.0"
-  resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-16.11.0.tgz#7e7c4a5a85a569d565c2462f5d345da2dd849af5"
-  integrity sha512-nrRyIUE1e7j8PaXSPtyRKtz+2y9ubW/ghNgqKFHHAHaeP0fpF5uXR+sq8IMRHC+ZUxw7W9NyCDTBtwWxvkb0iA==
+react-dom@^16.12.0:
+  version "16.12.0"
+  resolved "https://registry.yarnpkg.com/react-dom/-/react-dom-16.12.0.tgz#0da4b714b8d13c2038c9396b54a92baea633fe11"
+  integrity sha512-LMxFfAGrcS3kETtQaCkTKjMiifahaMySFDn71fZUNpPHZQEzmk/GiAeIT8JSOrHB23fnuCOMruL2a8NYlw+8Gw==
   dependencies:
     loose-envify "^1.1.0"
     object-assign "^4.1.1"
     prop-types "^15.6.2"
-    scheduler "^0.17.0"
+    scheduler "^0.18.0"
 
 react-emotion@^9.2.6:
   version "9.2.12"
@@ -7318,15 +7318,15 @@ react-redux@^7.1.1:
     prop-types "^15.7.2"
     react-is "^16.9.0"
 
-react-test-renderer@^16.11.0:
-  version "16.11.0"
-  resolved "https://registry.yarnpkg.com/react-test-renderer/-/react-test-renderer-16.11.0.tgz#72574566496462c808ac449b0287a4c0a1a7d8f8"
-  integrity sha512-nh9gDl8R4ut+ZNNb2EeKO5VMvTKxwzurbSMuGBoKtjpjbg8JK/u3eVPVNi1h1Ue+eYK9oSzJjb+K3lzLxyA4ag==
+react-test-renderer@^16.12.0:
+  version "16.12.0"
+  resolved "https://registry.yarnpkg.com/react-test-renderer/-/react-test-renderer-16.12.0.tgz#11417ffda579306d4e841a794d32140f3da1b43f"
+  integrity sha512-Vj/teSqt2oayaWxkbhQ6gKis+t5JrknXfPVo+aIJ8QwYAqMPH77uptOdrlphyxl8eQI/rtkOYg86i/UWkpFu0w==
   dependencies:
     object-assign "^4.1.1"
     prop-types "^15.6.2"
     react-is "^16.8.6"
-    scheduler "^0.17.0"
+    scheduler "^0.18.0"
 
 react-transition-group@^4.3.0:
   version "4.3.0"
@@ -7351,10 +7351,10 @@ react-window@^1.3.1:
     "@babel/runtime" "^7.0.0"
     memoize-one ">=3.1.1 <6"
 
-react@16.11.0:
-  version "16.11.0"
-  resolved "https://registry.yarnpkg.com/react/-/react-16.11.0.tgz#d294545fe62299ccee83363599bf904e4a07fdbb"
-  integrity sha512-M5Y8yITaLmU0ynd0r1Yvfq98Rmll6q8AxaEe88c8e7LxO8fZ2cNgmFt0aGAS9wzf1Ao32NKXtCl+/tVVtkxq6g==
+react@16.12.0:
+  version "16.12.0"
+  resolved "https://registry.yarnpkg.com/react/-/react-16.12.0.tgz#0c0a9c6a142429e3614834d5a778e18aa78a0b83"
+  integrity sha512-fglqy3k5E+81pA8s+7K0/T3DBCF0ZDOher1elBFzF7O6arXJgzyu/FW+COxFvAWXJoJN9KIZbT2LXlukwphYTA==
   dependencies:
     loose-envify "^1.1.0"
     object-assign "^4.1.1"
@@ -7948,10 +7948,10 @@ sc-formatter@^3.0.1:
   resolved "https://registry.yarnpkg.com/sc-formatter/-/sc-formatter-3.0.2.tgz#9abdb14e71873ce7157714d3002477bbdb33c4e6"
   integrity sha512-9PbqYBpCq+OoEeRQ3QfFIGE6qwjjBcd2j7UjgDlhnZbtSnuGgHdcRklPKYGuYFH82V/dwd+AIpu8XvA1zqTd+A==
 
-scheduler@^0.17.0:
-  version "0.17.0"
-  resolved "https://registry.yarnpkg.com/scheduler/-/scheduler-0.17.0.tgz#7c9c673e4ec781fac853927916d1c426b6f3ddfe"
-  integrity sha512-7rro8Io3tnCPuY4la/NuI5F2yfESpnfZyT6TtkXnSWVkcu0BCDJ+8gk5ozUaFaxpIyNuWAPXrH0yFcSi28fnDA==
+scheduler@^0.18.0:
+  version "0.18.0"
+  resolved "https://registry.yarnpkg.com/scheduler/-/scheduler-0.18.0.tgz#5901ad6659bc1d8f3fdaf36eb7a67b0d6746b1c4"
+  integrity sha512-agTSHR1Nbfi6ulI0kYNK0203joW2Y5W4po4l+v03tOoiJKpTBbxpNhWDvqc/4IcOw+KLmSiQLTasZ4cab2/UWQ==
   dependencies:
     loose-envify "^1.1.0"
     object-assign "^4.1.1"