chore(deps-rs): bump serde_json from 1.0.119 to 1.0.120 (#453)

Bumps [serde_json](https://github.com/serde-rs/json) from 1.0.119 to
1.0.120.
<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>v1.0.120</h2>
<ul>
<li>Correctly specify required version of <code>indexmap</code>
dependency (<a
href="https://redirect.github.com/serde-rs/json/issues/1152">#1152</a>,
thanks <a
href="https://github.com/cforycki"><code>@​cforycki</code></a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/serde-rs/json/commit/bcedc3d96bcc33184f16d63eab397295e2193350"><code>bcedc3d</code></a>
Release 1.0.120</li>
<li><a
href="https://github.com/serde-rs/json/commit/962c0fbbecc7dc8559cfeb019c2611737512f937"><code>962c0fb</code></a>
Merge pull request <a
href="https://redirect.github.com/serde-rs/json/issues/1152">#1152</a>
from cforycki/fix/index-map-minimal-version</li>
<li><a
href="https://github.com/serde-rs/json/commit/3480feda7b572d33992544061a8e0fbf8610a803"><code>3480fed</code></a>
fix: indexmap minimal version with Map::shift_insert()</li>
<li>See full diff in <a
href="https://github.com/serde-rs/json/compare/v1.0.119...v1.0.120">compare
view</a></li>
</ul>
</details>
<br />


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Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>