Bump ethers from 5.4.6 to 5.4.7 (#674)

Bumps [ethers](https://github.com/ethers-io/ethers.js/tree/HEAD/packages/ethers) from 5.4.6 to 5.4.7.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/ethers-io/ethers.js/releases">ethers's releases</a>.</em></p>
<blockquote>
<h2>ethers/v5.4.7 (2021-09-16 13:17)</h2>
<ul>
<li>Fix parseUints with excess zeros and fix ReDoS issue. (<a href="https://github-redirect.dependabot.com/ethers-io/ethers.js/issues/2016">#2016</a>, <a href="https://github-redirect.dependabot.com/ethers-io/ethers.js/issues/1975">#1975</a>, <a href="https://github-redirect.dependabot.com/ethers-io/ethers.js/issues/1976">#1976</a>; <a href="https://github.com/ethers-io/ethers.js/commit/32a6b2a362815eb85ce3f3abad5adf92f2b80e10">32a6b2a</a>)</li>
</ul>
<hr />
<p><strong>Embedding UMD with <a href="https://developer.mozilla.org/en-US/docs/Web/Security/Subresource_Integrity">SRI</a>:</strong></p>
<pre lang="html"><code>&lt;script type=&quot;text/javascript&quot;
        integrity=&quot;sha384-sZE9Fv4ksabiit2R12RbENLCRop5vpbBt6dZPJwM6l+1L0fAm8Q45psc7tmp7mi/&quot;
        crossorigin=&quot;anonymous&quot;
        src=&quot;https://cdn-cors.ethers.io/lib/ethers-5.4.7.umd.min.js&quot;&gt;
&lt;/script&gt;
</code></pre>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/ethers-io/ethers.js/blob/master/CHANGELOG.md">ethers's changelog</a>.</em></p>
<blockquote>
<h2>ethers/v5.4.7 (2021-09-16 13:17)</h2>
<ul>
<li>Fix parseUints with excess zeros and fix ReDoS issue. (<a href="https://github-redirect.dependabot.com/ethers-io/ethers.js/issues/2016">#2016</a>, <a href="https://github-redirect.dependabot.com/ethers-io/ethers.js/issues/1975">#1975</a>, <a href="https://github-redirect.dependabot.com/ethers-io/ethers.js/issues/1976">#1976</a>; <a href="https://github.com/ethers-io/ethers.js/commit/32a6b2a362815eb85ce3f3abad5adf92f2b80e10">32a6b2a</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/ethers-io/ethers.js/commit/4166b2753d0d6b230a3a22b5a2b6c4e1906a7af7"><code>4166b27</code></a> Updated dist files.</li>
<li>See full diff in <a href="https://github.com/ethers-io/ethers.js/commits/v5.4.7/packages/ethers">compare view</a></li>
</ul>
</details>
<br />


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</details>

yarn.lock

@@ -1493,10 +1493,10 @@
     "@ethersproject/bytes" "^5.4.0"
     "@ethersproject/properties" "^5.4.0"
 
-"@ethersproject/[email protected].1", "@ethersproject/bignumber@>=5.0.0-beta.130", "@ethersproject/bignumber@^5.4.0":
-  version "5.4.1"
-  resolved "https://registry.yarnpkg.com/@ethersproject/bignumber/-/bignumber-5.4.1.tgz#64399d3b9ae80aa83d483e550ba57ea062c1042d"
-  integrity sha512-fJhdxqoQNuDOk6epfM7yD6J8Pol4NUCy1vkaGAkuujZm0+lNow//MKu1hLhRiYV4BsOHyBv5/lsTjF+7hWwhJg==
+"@ethersproject/[email protected].2", "@ethersproject/bignumber@>=5.0.0-beta.130", "@ethersproject/bignumber@^5.4.0":
+  version "5.4.2"
+  resolved "https://registry.yarnpkg.com/@ethersproject/bignumber/-/bignumber-5.4.2.tgz#44232e015ae4ce82ac034de549eb3583c71283d8"
+  integrity sha512-oIBDhsKy5bs7j36JlaTzFgNPaZjiNDOXsdSgSpXRucUl+UA6L/1YLlFeI3cPAoodcenzF4nxNPV13pcy7XbWjA==
   dependencies:
     "@ethersproject/bytes" "^5.4.0"
     "@ethersproject/logger" "^5.4.0"
@@ -9193,17 +9193,17 @@ ethereumjs-wallet@^1.0.1:
     uuid "^3.3.2"
 
 ethers@^5.0.26:
-  version "5.4.6"
-  resolved "https://registry.yarnpkg.com/ethers/-/ethers-5.4.6.tgz#fe0a023956b5502c947f58e82fbcf9a73e5e75b6"
-  integrity sha512-F7LXARyB/Px3AQC6/QKedWZ8eqCkgOLORqL4B/F0Mag/K+qJSFGqsR36EaOZ6fKg3ZonI+pdbhb4A8Knt/43jQ==
+  version "5.4.7"
+  resolved "https://registry.yarnpkg.com/ethers/-/ethers-5.4.7.tgz#0fd491a5da7c9793de2d6058d76b41b1e7efba8f"
+  integrity sha512-iZc5p2nqfWK1sj8RabwsPM28cr37Bpq7ehTQ5rWExBr2Y09Sn1lDKZOED26n+TsZMye7Y6mIgQ/1cwpSD8XZew==
   dependencies:
     "@ethersproject/abi" "5.4.1"
     "@ethersproject/abstract-provider" "5.4.1"
     "@ethersproject/abstract-signer" "5.4.1"
     "@ethersproject/address" "5.4.0"
     "@ethersproject/base64" "5.4.0"
     "@ethersproject/basex" "5.4.0"
-    "@ethersproject/bignumber" "5.4.1"
+    "@ethersproject/bignumber" "5.4.2"
     "@ethersproject/bytes" "5.4.0"
     "@ethersproject/constants" "5.4.0"
     "@ethersproject/contracts" "5.4.1"