build(deps): bump av1-grain from 0.2.4 to 0.2.5 (servo#40122)

Bumps [av1-grain](https://github.com/rust-av/av1-grain) from 0.2.4 to
0.2.5.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/rust-av/av1-grain/releases">av1-grain's
releases</a>.</em></p>
<blockquote>
<h2>v0.2.5</h2>
<h2>What's Changed</h2>
<ul>
<li>chore: upgrade to nom 8 by <a
href="https://github.com/shssoichiro"><code>@​shssoichiro</code></a> in
<a
href="https://redirect.github.com/rust-av/av1-grain/pull/22">rust-av/av1-grain#22</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/rust-av/av1-grain/compare/v0.2.4...v0.2.5">https://github.com/rust-av/av1-grain/compare/v0.2.4...v0.2.5</a></p>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/rust-av/av1-grain/blob/main/CHANGELOG.md">av1-grain's
changelog</a>.</em></p>
<blockquote>
<h2>Version 0.2.5</h2>
<ul>
<li>Bump <code>nom</code> dependency to 8.0</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/rust-av/av1-grain/commit/4cff686adc70186b59f3d035079cca93c191d88c"><code>4cff686</code></a>
Bump version</li>
<li><a
href="https://github.com/rust-av/av1-grain/commit/961a77868c31dc2761fa0d783fe377750b108a66"><code>961a778</code></a>
Add an example to the readme for photon noise</li>
<li><a
href="https://github.com/rust-av/av1-grain/commit/beaf66774f7fee66cddad17b6a7d0dc7e44114ce"><code>beaf667</code></a>
chore: cleanup lint configuration and new lints</li>
<li><a
href="https://github.com/rust-av/av1-grain/commit/db01baeec4bd0ef6e3ddb1ce36c15de326bdaf0c"><code>db01bae</code></a>
chore: upgrade to nom 8</li>
<li>See full diff in <a
href="https://github.com/rust-av/av1-grain/compare/v0.2.4...v0.2.5">compare
view</a></li>
</ul>
</details>
<br />


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Author: dependabot[bot]