Update eslint to the latest version 🚀 (#17)

## The devDependency [eslint](https://github.com/eslint/eslint) was updated from `5.15.2` to `5.15.3`.
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.

---

<details>
<summary>Release Notes for v5.15.3</summary>

<ul>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/71adc665b9649b173adc76f80723b8de20664ae1"><code>71adc66</code></a> Fix: avoid moving comments in implicit-arrow-linebreak (fixes <a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="421906357" data-permission-text="Issue title is private" data-url="eslint/eslint#11521" data-hovercard-type="issue" data-hovercard-url="/eslint/eslint/issues/11521/hovercard" href="https://urls.greenkeeper.io/eslint/eslint/issues/11521">#11521</a>) (<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="421978023" data-permission-text="Issue title is private" data-url="eslint/eslint#11522" data-hovercard-type="pull_request" data-hovercard-url="/eslint/eslint/pull/11522/hovercard" href="https://urls.greenkeeper.io/eslint/eslint/pull/11522">#11522</a>) (Teddy Katz)</li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/1f715a20c145d8ccc38f3310afccd838495d09d4"><code>1f715a2</code></a> Chore: make test-case-property-ordering reasonable (<a class="issue-link js-issue-link" data-error-text="Failed to load issue title" data-id="421335627" data-permission-text="Issue title is private" data-url="eslint/eslint#11511" data-hovercard-type="pull_request" data-hovercard-url="/eslint/eslint/pull/11511/hovercard" href="https://urls.greenkeeper.io/eslint/eslint/pull/11511">#11511</a>) (Toru Nagashima)</li>
</ul>
</details>

<details>
<summary>Commits</summary>
<p>The new version differs by 4 commits.</p>
<ul>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/a6168f85f9017332777b2bac5af8c4a979e06298"><code>a6168f8</code></a> <code>5.15.3</code></li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/cb57316b156e118caf726ad534bedc47f077bda2"><code>cb57316</code></a> <code>Build: changelog update for 5.15.3</code></li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/71adc665b9649b173adc76f80723b8de20664ae1"><code>71adc66</code></a> <code>Fix: avoid moving comments in implicit-arrow-linebreak (fixes #11521) (#11522)</code></li>
<li><a href="https://urls.greenkeeper.io/eslint/eslint/commit/1f715a20c145d8ccc38f3310afccd838495d09d4"><code>1f715a2</code></a> <code>Chore: make test-case-property-ordering reasonable (#11511)</code></li>
</ul>
<p>See the <a href="https://urls.greenkeeper.io/eslint/eslint/compare/f3547701816d35ffdefa00d755f029109e15924f...a6168f85f9017332777b2bac5af8c4a979e06298">full diff</a></p>
</details>

<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>

---


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package.json

@@ -25,7 +25,7 @@
     "uuid": "3.3.2"
   },
   "devDependencies": {
-    "eslint": "5.15.2",
+    "eslint": "5.15.3",
     "eslint-plugin-node": "8.0.0",
     "express": "4.16.3",
     "jest": "23.4.1",

yarn.lock

@@ -958,10 +958,10 @@ eslint-visitor-keys@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/eslint-visitor-keys/-/eslint-visitor-keys-1.0.0.tgz#3f3180fb2e291017716acb4c9d6d5b5c34a6a81d"
 
-eslint@5.15.2:
-  version "5.15.2"
-  resolved "https://registry.yarnpkg.com/eslint/-/eslint-5.15.2.tgz#0237bbb2362f89f4effef2f191eb0fea5279c0a5"
-  integrity sha512-I8VM4SILpMwUvsRt83bQVwIRQAJ2iPMXun1FVZ/lV1OHklH2tJaXqoDnNzdiFc6bnCtGKXvQIQNP3kj1eMskSw==
+eslint@5.15.3:
+  version "5.15.3"
+  resolved "https://registry.yarnpkg.com/eslint/-/eslint-5.15.3.tgz#c79c3909dc8a7fa3714fb340c11e30fd2526b8b5"
+  integrity sha512-vMGi0PjCHSokZxE0NLp2VneGw5sio7SSiDNgIUn2tC0XkWJRNOIoHIg3CliLVfXnJsiHxGAYrkw0PieAu8+KYQ==
   dependencies:
     "@babel/code-frame" "^7.0.0"
     ajv "^6.9.1"