chore(deps): Bump subst from 0.3.5 to 0.3.7 (#1619)

Bumps [subst](https://github.com/fizyr/subst) from 0.3.5 to 0.3.7.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/fizyr/subst/blob/main/CHANGELOG">subst's
changelog</a>.</em></p>
<blockquote>
<h1>Version 0.3.7 - 2024-12-13</h1>
<ul>
<li>[fix][minor] Fix violation of aliasing rules in
<code>TemplateBuf</code> and <code>ByteTemplateBuf</code>.</li>
</ul>
<h1>Version 0.3.6 - 2024-12-13</h1>
<ul>
<li>[fix][minor] Fix unsound <code>Clone</code> and <code>Drop</code>
implementation of <code>TemplateBuf</code> and
<code>ByteTemplateBuf</code>.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/fizyr/subst/commit/ba5fd8de4cc950b35204e1d4ae1f639172295f57"><code>ba5fd8d</code></a>
Bump version to 0.3.7.</li>
<li><a
href="https://github.com/fizyr/subst/commit/f973c9843660288be6e52248d81a3dad6cce024e"><code>f973c98</code></a>
Update CHANGELOG.</li>
<li><a
href="https://github.com/fizyr/subst/commit/6f823faab46b15c887573d529376def8c0c58a44"><code>6f823fa</code></a>
Replace manual transmute with <code>transmute_lifetime()</code>.</li>
<li><a
href="https://github.com/fizyr/subst/commit/200c432b0b369616a3159be0e4867fea9d2413bc"><code>200c432</code></a>
Merge pull request <a
href="https://redirect.github.com/fizyr/subst/issues/28">#28</a> from
sebschrader/feature/fix-self-referential-ub</li>
<li><a
href="https://github.com/fizyr/subst/commit/0b7314c3715a74bfb537c0febdb604a6f7537100"><code>0b7314c</code></a>
Merge branch 'main' into feature/fix-self-referential-ub</li>
<li><a
href="https://github.com/fizyr/subst/commit/07bccd5ae8a8e79160362e6d06cdd6d9aa13ef46"><code>07bccd5</code></a>
Revert &quot;Ensure references remain valid after source is
moved&quot;</li>
<li><a
href="https://github.com/fizyr/subst/commit/2ba38d85af745453362ec8b01d8f3ec09bbc89c0"><code>2ba38d8</code></a>
Merge pull request <a
href="https://redirect.github.com/fizyr/subst/issues/30">#30</a> from
fizyr/no-aliasing</li>
<li><a
href="https://github.com/fizyr/subst/commit/28b2e9f9ed4dc2190e0d6b09590bf0a1ce902ef7"><code>28b2e9f</code></a>
Store the wrapped template of TemplateBuf in MaybeUninit.</li>
<li><a
href="https://github.com/fizyr/subst/commit/1aadd380d0f2bf9ef1fa604dfa81b63ef30dae14"><code>1aadd38</code></a>
Add more test for possible undefined behaviour in TemplateBuf.</li>
<li><a
href="https://github.com/fizyr/subst/commit/7d0a5fe85cb3b16070775d8abb3d75bb7186ffa6"><code>7d0a5fe</code></a>
Run miri in CI.</li>
<li>Additional commits viewable in <a
href="https://github.com/fizyr/subst/compare/v0.3.5...v0.3.7">compare
view</a></li>
</ul>
</details>
<br />


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