build(deps): bump serde_yaml from 0.9.28 to 0.9.29 (#1630)

Bumps [serde_yaml](https://github.com/dtolnay/serde-yaml) from 0.9.28 to
0.9.29.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/dtolnay/serde-yaml/releases">serde_yaml's
releases</a>.</em></p>
<blockquote>
<h2>0.9.29</h2>
<ul>
<li>Turn on <code>deny(unsafe_op_in_unsafe_fn)</code> lint</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="b957d2b15d"><code>b957d2b</code></a>
Release 0.9.29</li>
<li><a
href="007fc2d5c1"><code>007fc2d</code></a>
Merge pull request <a
href="https://redirect.github.com/dtolnay/serde-yaml/issues/401">#401</a>
from dtolnay/unsafeop</li>
<li><a
href="5bac2475b0"><code>5bac247</code></a>
Fill in unsafe blocks inside unsafe functions</li>
<li><a
href="0f6dba18ab"><code>0f6dba1</code></a>
Turn on deny(unsafe_op_in_unsafe_fn)</li>
<li>See full diff in <a
href="https://github.com/dtolnay/serde-yaml/compare/0.9.28...0.9.29">compare
view</a></li>
</ul>
</details>
<br />


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Cargo.lock

@@ -2076,9 +2076,9 @@ dependencies = [
 
 [[package]]
 name = "serde_yaml"
-version = "0.9.28"
+version = "0.9.29"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9269cfafc7e0257ee4a42f3f68a307f458c63d9e7c8ba4b58c5d15f1b7d7e8d3"
+checksum = "a15e0ef66bf939a7c890a0bf6d5a733c70202225f9888a89ed5c62298b019129"
 dependencies = [
  "indexmap",
  "itoa",