chore(deps): bump unicode-width from 0.1.14 to 0.2.1 in /codex-rs (#2156)

Bumps [unicode-width](https://github.com/unicode-rs/unicode-width) from
0.1.14 to 0.2.1.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="0085e91db7"><code>0085e91</code></a>
Publish 0.2.1</li>
<li><a
href="6db0c14cbd"><code>6db0c14</code></a>
Remove <code>compiler-builtins</code> from <code>rustc-dep-of-std</code>
dependencies (<a
href="https://redirect.github.com/unicode-rs/unicode-width/issues/77">#77</a>)</li>
<li><a
href="0bccd3f1b5"><code>0bccd3f</code></a>
update copyright year (<a
href="https://redirect.github.com/unicode-rs/unicode-width/issues/76">#76</a>)</li>
<li><a
href="7a7fcdc813"><code>7a7fcdc</code></a>
Support Unicode 16 (<a
href="https://redirect.github.com/unicode-rs/unicode-width/issues/74">#74</a>)</li>
<li><a
href="82d7136b49"><code>82d7136</code></a>
Advertise and enforce MSRV (<a
href="https://redirect.github.com/unicode-rs/unicode-width/issues/73">#73</a>)</li>
<li><a
href="e77b2929bc"><code>e77b292</code></a>
Make characters with <code>Line_Break=Ambiguous</code> ambiguous (<a
href="https://redirect.github.com/unicode-rs/unicode-width/issues/61">#61</a>)</li>
<li><a
href="5a7fced663"><code>5a7fced</code></a>
Update version number in Readme (<a
href="https://redirect.github.com/unicode-rs/unicode-width/issues/70">#70</a>)</li>
<li><a
href="79eab0d9fc"><code>79eab0d</code></a>
Publish 0.2.0 with newlines treated as width 1 (<a
href="https://redirect.github.com/unicode-rs/unicode-width/issues/68">#68</a>)</li>
<li>See full diff in <a
href="https://github.com/unicode-rs/unicode-width/compare/v0.1.14...v0.2.1">compare
view</a></li>
</ul>
</details>
<br />


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codex-rs/Cargo.lock

@@ -976,7 +976,7 @@ dependencies = [
  "tracing-appender",
  "tracing-subscriber",
  "unicode-segmentation",
- "unicode-width 0.1.14",
+ "unicode-width 0.2.1",
  "url",
  "vt100",
 ]

codex-rs/Cargo.toml

@@ -140,7 +140,7 @@ tree-sitter = "0.25.9"
 tree-sitter-bash = "0.25.0"
 ts-rs = "11"
 unicode-segmentation = "1.12.0"
-unicode-width = "0.1"
+unicode-width = "0.2"
 url = "2"
 urlencoding = "2.1"
 uuid = "1"