Bump serde from 1.0.190 to 1.0.191 in /cmd/oci-catalog (#7051)

Bumps [serde](https://github.com/serde-rs/serde) from 1.0.190 to
1.0.191.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/serde-rs/serde/releases">serde's
releases</a>.</em></p>
<blockquote>
<h2>v1.0.191</h2>
<ul>
<li>Documentation improvements</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/serde-rs/serde/commit/59892e7b58f95dace1fbf57bfa3072dc655b598e"><code>59892e7</code></a>
Release 1.0.191</li>
<li><a
href="https://github.com/serde-rs/serde/commit/97dd07a7d156f037a75be70022816b59b11f1bb1"><code>97dd07a</code></a>
Merge pull request <a
href="https://redirect.github.com/serde-rs/serde/issues/2647">#2647</a>
from dtolnay/doccfg</li>
<li><a
href="https://github.com/serde-rs/serde/commit/c8bc97c81be0251670e3f3f279dc45820ad87784"><code>c8bc97c</code></a>
Document &quot;rc&quot; and &quot;unstable&quot; features on
docs.rs</li>
<li><a
href="https://github.com/serde-rs/serde/commit/9dacfbbd69d7911910eb641ed3deb6ce723059f0"><code>9dacfbb</code></a>
Fill in more doc(cfg) attributes</li>
<li><a
href="https://github.com/serde-rs/serde/commit/05c2509d07ae52a15db3675aa6e942620d988c3a"><code>05c2509</code></a>
Relocate cfg attrs into deref_impl</li>
<li><a
href="https://github.com/serde-rs/serde/commit/64f949b37b5b6cd1c02f71ab13d8beae53150b5d"><code>64f949b</code></a>
Relocate cfg attrs into parse_ip_impl and parse_socket_impl</li>
<li><a
href="https://github.com/serde-rs/serde/commit/3f339de36ae3e72fa4b2d683c12d3c37ec19537d"><code>3f339de</code></a>
Relocate cfg attrs into seq_impl and map_impl</li>
<li><a
href="https://github.com/serde-rs/serde/commit/215c2b71ef387e193860b57ee2868f3a2367afaa"><code>215c2b7</code></a>
Relocate cfg attrs into forwarded_impl macro</li>
<li><a
href="https://github.com/serde-rs/serde/commit/ce8fef7e0b917cc5150b3c753fd444c2a5f2acc6"><code>ce8fef7</code></a>
Show that derives are specific to feature=&quot;derive&quot; in
documentation</li>
<li><a
href="https://github.com/serde-rs/serde/commit/0726b2c4799fb31705aa8c488209dd865a8fe851"><code>0726b2c</code></a>
Enable feature(doc_cfg) during docs.rs documentation build</li>
<li>See full diff in <a
href="https://github.com/serde-rs/serde/compare/v1.0.190...v1.0.191">compare
view</a></li>
</ul>
</details>
<br />


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