chore(deps-dev): Bump jsii-diff from 1.90.0 to 1.91.0 (#637)

Bumps [jsii-diff](https://github.com/aws/jsii/tree/HEAD/packages/jsii-diff) from 1.90.0 to 1.91.0.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/aws/jsii/blob/main/CHANGELOG.md">jsii-diff's changelog</a>.</em></p>
<blockquote>
<h2><a href="https://github.com/aws/jsii/compare/v1.90.0...v1.91.0">1.91.0</a> (2023-10-24)</h2>
</blockquote>
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<details>
<summary>Commits</summary>
<ul>
<li>See full diff in <a href="https://github.com/aws/jsii/commits/v1.91.0/packages/jsii-diff">compare view</a></li>
</ul>
</details>
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