Update eslint-plugin-react to the latest version 🚀 (#114)

## The devDependency [eslint-plugin-react](https://github.com/yannickcr/eslint-plugin-react) was updated from `7.12.0` to `7.12.1`.
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.

---

<details>
<summary>Release Notes for v7.12.1</summary>

<h3>Fixed</h3>
<ul>
<li><a href="/yannickcr/eslint-plugin-react/blob/v7.12.1/docs/rules/no-unused-state.md"><code>no-unused-state</code></a>: Fix crash with class fields (<a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/pull/2098" data-hovercard-type="pull_request" data-hovercard-url="/jsx-eslint/eslint-plugin-react/pull/2098/hovercard">#2098</a>, <a class="user-mention" data-hovercard-type="user" data-hovercard-url="/hovercards?user_id=416773" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://urls.greenkeeper.io/jomasti">@jomasti</a>)</li>
<li><a href="/yannickcr/eslint-plugin-react/blob/v7.12.1/docs/rules/prop-types.md"><code>prop-types</code></a>: Fix false positives inside lifecycle methods (<a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/pull/2099" data-hovercard-type="pull_request" data-hovercard-url="/jsx-eslint/eslint-plugin-react/pull/2099/hovercard">#2099</a>, <a class="user-mention" data-hovercard-type="user" data-hovercard-url="/hovercards?user_id=416773" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://urls.greenkeeper.io/jomasti">@jomasti</a>)</li>
<li><a href="/yannickcr/eslint-plugin-react/blob/v7.12.1/docs/rules/jsx-max-depth.md"><code>jsx-max-depth</code></a>: avoid a crash (<a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/issues/2102" data-hovercard-type="issue" data-hovercard-url="/jsx-eslint/eslint-plugin-react/issues/2102/hovercard">#2102</a>, <a class="user-mention" data-hovercard-type="user" data-hovercard-url="/hovercards?user_id=45469" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://urls.greenkeeper.io/ljharb">@ljharb</a>)</li>
<li><a href="/yannickcr/eslint-plugin-react/blob/v7.12.1/docs/rules/jsx-wrap-multilines.md"><code>jsx-wrap-multilines</code></a>: avoid crash when no trailing newline (<a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/issues/2100" data-hovercard-type="issue" data-hovercard-url="/jsx-eslint/eslint-plugin-react/issues/2100/hovercard">#2100</a>, <a class="user-mention" data-hovercard-type="user" data-hovercard-url="/hovercards?user_id=45469" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://urls.greenkeeper.io/ljharb">@ljharb</a>)</li>
</ul>
<h3>Changed</h3>
<ul>
<li>Fix CHANGELOG.md (<a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/pull/2097" data-hovercard-type="pull_request" data-hovercard-url="/jsx-eslint/eslint-plugin-react/pull/2097/hovercard">#2097</a>, <a class="user-mention" data-hovercard-type="user" data-hovercard-url="/hovercards?user_id=93752" data-octo-click="hovercard-link-click" data-octo-dimensions="link_type:self" href="https://urls.greenkeeper.io/alexzherdev">@alexzherdev</a>)</li>
</ul>
</details>

<details>
<summary>Commits</summary>
<p>The new version differs by 9 commits.</p>
<ul>
<li><a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/commit/0202de33df142df60affb1924398ccd5bb453d9a"><code>0202de3</code></a> <code>Update CHANGELOG and bump version</code></li>
<li><a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/commit/6f7cb519af79c770002667fe6a259e06991d47c9"><code>6f7cb51</code></a> <code>[Tests] fix linter</code></li>
<li><a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/commit/695e53443c75de60ea1fadba229fec77be3be562"><code>695e534</code></a> <code>[Fix] <code>jsx-wrap-multilines</code>: avoid crash when no trailing newline</code></li>
<li><a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/commit/146d8d1eb7fd9c38f91e91a5807025d138bd4f2c"><code>146d8d1</code></a> <code>[Fix] <code>jsx-max-depth</code>: avoid a crash</code></li>
<li><a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/commit/dfeeb8110c63b681ba70f6c81864e694d9cfc6c1"><code>dfeeb81</code></a> <code>Merge pull request #2099 from jomasti/issue-2094</code></li>
<li><a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/commit/55e5fc132c5f508073190f859dc8133a1e50a1a3"><code>55e5fc1</code></a> <code>Fix false positives inside lifecycle methods</code></li>
<li><a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/commit/254a84a7cfac854562e73686887c27abc15b5953"><code>254a84a</code></a> <code>Merge pull request #2098 from jomasti/issue-2096</code></li>
<li><a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/commit/72982f6e59e7ad1debd5168ab203eef104a62066"><code>72982f6</code></a> <code>Fix no-unused-state crash</code></li>
<li><a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/commit/835fc05035a5a2e31d7bb992c3aa532e7ab8c7ef"><code>835fc05</code></a> <code>Fix CHANGELOG.md</code></li>
</ul>
<p>See the <a href="https://urls.greenkeeper.io/yannickcr/eslint-plugin-react/compare/a83d65caffb8c62ee5b85446df3ef3f09f1a472c...0202de33df142df60affb1924398ccd5bb453d9a">full diff</a></p>
</details>

<details>
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package.json

@@ -42,7 +42,7 @@
     "eslint-plugin-import": "^2.14.0",
     "eslint-plugin-jsx-a11y": "^6.1.1",
     "eslint-plugin-prefer-object-spread": "^1.2.1",
-    "eslint-plugin-react": "7.12.0",
+    "eslint-plugin-react": "7.12.1",
     "jest": "^23.5.0",
     "jest-cli": "^23.5.0",
     "jsdoc": "^3.4.3",