Bump rust-embed from 6.4.1 to 6.6.0 (#8330)

Bumps [rust-embed](https://github.com/pyros2097/rust-embed) from 6.4.1
to 6.6.0.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/pyrossh/rust-embed/blob/master/changelog.md">rust-embed's
changelog</a>.</em></p>
<blockquote>
<h2>[6.6.0] - 2023-03-05</h2>
<ul>
<li>sort_by_file_name() requires walkdir v2.3.2 <a
href="https://github-redirect.dependabot.com/pyrossh/rust-embed/issues/206">#206</a></li>
<li>Add <code>mime-guess</code> feature to statically store mimetype <a
href="https://github-redirect.dependabot.com/pyrossh/rust-embed/issues/192">#192</a></li>
</ul>
<h2>[6.4.2] - 2022-10-20</h2>
<ul>
<li>Fail the proc macro if include/exclude are used without the feature
<a
href="https://github-redirect.dependabot.com/pyrossh/rust-embed/issues/187">#187</a></li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li>See full diff in <a
href="https://github.com/pyros2097/rust-embed/commits">compare
view</a></li>
</ul>
</details>
<br />


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crates/nu-command/Cargo.toml

@@ -75,7 +75,7 @@ regex = "1.7.1"
 ureq = { version = "2.6.2", default-features = false, features = ["json", "charset", "native-tls", "gzip"] }
 native-tls = "0.2.11"
 roxmltree = "0.18.0"
-rust-embed = "6.3.0"
+rust-embed = "6.6.0"
 same-file = "1.0.6"
 serde = { version = "1.0.123", features = ["derive"] }
 serde_urlencoded = "0.7.0"