Bump serde_json from 1.0.60 to 1.0.61 in /packer (#1801)

Summary:
Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.60 to 1.0.61.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/serde-rs/json/releases">serde_json's releases</a>.</em></p>
<blockquote>
<h2>v1.0.61</h2>
<ul>
<li>Add <code>impl From&lt;Number&gt; for Value</code> (<a href="https://github-redirect.dependabot.com/serde-rs/json/issues/737">https://github.com/facebook/flipper/issues/737</a>, thanks <a href="https://github.com/imp">imp</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="613d66e9c5"><code>613d66e</code></a> Release 1.0.61</li>
<li><a href="8225a8b917"><code>8225a8b</code></a> Format with rustfmt 1.4.30-nightly</li>
<li><a href="e63aedb9f1"><code>e63aedb</code></a> Merge pull request <a href="https://github-redirect.dependabot.com/serde-rs/json/issues/737">https://github.com/facebook/flipper/issues/737</a> from imp/value_from_number</li>
<li><a href="5df9aeda41"><code>5df9aed</code></a> Add impl From&lt;Number&gt; for Value</li>
<li><a href="5a815a52bb"><code>5a815a5</code></a> Ignore redundant_else pedantic clippy lint</li>
<li>See full diff in <a href="https://github.com/serde-rs/json/compare/v1.0.60...v1.0.61">compare view</a></li>
</ul>
</details>
<br />

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</details>

Pull Request resolved: https://github.com/facebook/flipper/pull/1801

Reviewed By: mweststrate

Differential Revision: D25782256

Pulled By: passy

fbshipit-source-id: 71e45be1568d1388ceafbd5e10202b67579560d0

packer/Cargo.toml

@@ -18,7 +18,7 @@ serde_yaml = "0.8.13"
 anyhow = "1.0.37"
 sha2 = "^0.8.1"
 data-encoding = "2.3.1"
-serde_json = "1.0.60"
+serde_json = "1.0.61"
 rayon = "1.4.1"
 indicatif = "0.15.0"
 xz2 = "0.1.6"