build(deps): bump zeroize from 1.7.0 to 1.8.1 (#354)

Bumps [zeroize](https://github.com/RustCrypto/utils) from 1.7.0 to
1.8.1.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/RustCrypto/utils/commit/7050a8402b44344023cd8d27fe6e0e4055d6bdde"><code>7050a84</code></a>
zeroize v1.8.1 (<a
href="https://redirect.github.com/RustCrypto/utils/issues/1075">#1075</a>)</li>
<li><a
href="https://github.com/RustCrypto/utils/commit/4b7b782b89800109dfa51d1fbdd7389d607dcdaa"><code>4b7b782</code></a>
zeroize: move <code>zeroize_derive</code> to toplevel (<a
href="https://redirect.github.com/RustCrypto/utils/issues/1074">#1074</a>)</li>
<li><a
href="https://github.com/RustCrypto/utils/commit/6b341bbacc58e6bfc1c260bbc88a7ca19221ef6f"><code>6b341bb</code></a>
zeroize: feature-gate AVX-512 under <code>simd</code>; MSRV 1.60 (<a
href="https://redirect.github.com/RustCrypto/utils/issues/1073">#1073</a>)</li>
<li><a
href="https://github.com/RustCrypto/utils/commit/f46a14777a6cb1c553dcc6dbdce26de8e1baf04e"><code>f46a147</code></a>
zeroize: note v1.8.0 was yanked in CHANGELOG.md (<a
href="https://redirect.github.com/RustCrypto/utils/issues/1071">#1071</a>)</li>
<li><a
href="https://github.com/RustCrypto/utils/commit/a7eddc620ed683216b97d924deeab7ea4f84a5af"><code>a7eddc6</code></a>
zeroize: fix unnecessary qualifications (<a
href="https://redirect.github.com/RustCrypto/utils/issues/1072">#1072</a>)</li>
<li><a
href="https://github.com/RustCrypto/utils/commit/9bbfb49e6541d710aea6f7a95c68c9f3d99140e2"><code>9bbfb49</code></a>
zeroize 1.8.0 (<a
href="https://redirect.github.com/RustCrypto/utils/issues/1065">#1065</a>)</li>
<li><a
href="https://github.com/RustCrypto/utils/commit/c0eab7f7abfc244e9fcd482520542329da31f87c"><code>c0eab7f</code></a>
cpufeatures: fix macOS build (<a
href="https://redirect.github.com/RustCrypto/utils/issues/1066">#1066</a>)</li>
<li><a
href="https://github.com/RustCrypto/utils/commit/6d383a554b76df2c6796d8d2982a6a8535342617"><code>6d383a5</code></a>
zeroize: always enable AArch64 support (<a
href="https://redirect.github.com/RustCrypto/utils/issues/1064">#1064</a>)</li>
<li><a
href="https://github.com/RustCrypto/utils/commit/24decb93793936110ae564b6c8e475d91f4e4e44"><code>24decb9</code></a>
zeroize: use <code>doc_auto_cfg</code> (<a
href="https://redirect.github.com/RustCrypto/utils/issues/1063">#1063</a>)</li>
<li><a
href="https://github.com/RustCrypto/utils/commit/cd3a147d62f5f2bf8d5bd10185a52c90f842395b"><code>cd3a147</code></a>
build(deps): bump prettyplease from 0.2.16 to 0.2.19 (<a
href="https://redirect.github.com/RustCrypto/utils/issues/1061">#1061</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/RustCrypto/utils/compare/zeroize-v1.7.0...zeroize-v1.8.1">compare
view</a></li>
</ul>
</details>
<br />

<details>
<summary>Most Recent Ignore Conditions Applied to This Pull
Request</summary>

| Dependency Name | Ignore Conditions |
| --- | --- |
| zeroize | [>= 1.4.a, < 1.5] |
</details>


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Cargo.lock

@@ -23,7 +23,7 @@ cfg-if = "1"
 cipher = { version = "=0.5.0-pre.4", optional = true}
 rand_core = { version = "0.9.0-alpha.1", optional = true, default-features = false }
 serde = { version = "1.0", features = ["derive"], optional = true }
-zeroize = { version = "1.6.0", optional = true }
+zeroize = { version = "1.8.1", optional = true }
 
 [target.'cfg(any(target_arch = "x86_64", target_arch = "x86"))'.dependencies]
 cpufeatures = "0.2"