chore: update flow-bin to the latest version 🚀 (#66)

## The devDependency [flow-bin](https://github.com/flowtype/flow-bin) was updated from `0.91.0` to `0.92.1`.
This version is **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.

---

[Find out more about this release](https://github.com/flowtype/flow-bin).

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

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Your [Greenkeeper](https://greenkeeper.io) bot 🌴

Author: greenkeeper[bot]

.flowconfig

@@ -1,2 +0,0 @@
-[version]
-^0.91.0

package.json

@@ -32,7 +32,7 @@
     "@babel/preset-react": "^7.0.0",
     "eslint": "^5.0.0",
     "eslint-config-callstack-io": "^1.1.1",
-    "flow-bin": "^0.91.0",
+    "flow-bin": "^0.95.1",
     "jest": "^24.0.0",
     "react": "^16.7.0",
     "react-test-renderer": "^16.7.0"

yarn.lock

@@ -2095,10 +2095,10 @@ flat-cache@^1.2.1:
     graceful-fs "^4.1.2"
     write "^0.2.1"
 
-flow-bin@^0.91.0:
-  version "0.91.0"
-  resolved "https://registry.yarnpkg.com/flow-bin/-/flow-bin-0.91.0.tgz#f5c89729f74b2ccbd47df6fbfadbdcc89cc1e478"
-  integrity sha512-j+L+xNiUYnZZ27MjVI0y2c9474ZHOvdSQq0Tjwh56mEA7tfxYqp5Dcb6aZSwvs3tGMTjCrZow9aUlZf3OoRyDQ==
+flow-bin@^0.95.1:
+  version "0.95.1"
+  resolved "https://registry.yarnpkg.com/flow-bin/-/flow-bin-0.95.1.tgz#633113831ccff4b7ee70a2730f63fc43b69ba85f"
+  integrity sha512-06IOC/pqPMNRYtC6AMZEWYR9Fi6UdBC7gImGinPuNUpPZFnP5E9/0cBCl3DWrH4zz/gSM2HdDilU7vPGpYIr2w==
 
 for-in@^1.0.2:
   version "1.0.2"