Auto merge of #26745 - servo:dependabot/cargo/block-buffer-0.7.3, r=jdm

Bump block-buffer from 0.7.0 to 0.7.3

Bumps [block-buffer](https://github.com/RustCrypto/utils) from 0.7.0 to 0.7.3.
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/RustCrypto/utils/commit/6ab1bbf4c9f580576e44079bd95cadf49220e575"><code>6ab1bbf</code></a> block-buffer v0.7.3</li>
<li><a href="https://github.com/RustCrypto/utils/commit/edab714932ef445b25ce7015741cd7282f0d0751"><code>edab714</code></a> Make block-buffer minimal-versions correct (<a href="https://github-redirect.dependabot.com/RustCrypto/utils/issues/23">#23</a>)</li>
<li><a href="https://github.com/RustCrypto/utils/commit/3cdecb4bd8c651dc0e03005ecd4dcbdd401044a4"><code>3cdecb4</code></a> Relaxed restrictions on padding buffer size.  See <a href="https://github-redirect.dependabot.com/RustCrypto/utils/issues/20">#20</a> (<a href="https://github-redirect.dependabot.com/RustCrypto/utils/issues/21">#21</a>)</li>
<li><a href="https://github.com/RustCrypto/utils/commit/969ed331330188ef11754f4c8b6c01513926bc4c"><code>969ed33</code></a> hex-literal license files. closes <a href="https://github-redirect.dependabot.com/RustCrypto/utils/issues/18">#18</a></li>
<li><a href="https://github.com/RustCrypto/utils/commit/1f9655532f53cfd639718174b47ce02299c8c4f4"><code>1f96555</code></a> hex-literal v0.1.3</li>
<li><a href="https://github.com/RustCrypto/utils/commit/7f8eb536ecb0606df930cc96bcbea5a3647462ab"><code>7f8eb53</code></a> Removes unnecessary backtick from hex-literal doc (<a href="https://github-redirect.dependabot.com/RustCrypto/utils/issues/16">#16</a>)</li>
<li><a href="https://github.com/RustCrypto/utils/commit/fd52602520735fcd640f044ff7f6796bcb757e21"><code>fd52602</code></a> comment out input2 method</li>
<li><a href="https://github.com/RustCrypto/utils/commit/9ae69ae6dda897f92c7d8a81ad4cf2c1a77d45ac"><code>9ae69ae</code></a> opaque-debug v0.2.2</li>
<li><a href="https://github.com/RustCrypto/utils/commit/5276f2015b69fa05b939a237b9ca31788e16d423"><code>5276f20</code></a> update/add license information</li>
<li><a href="https://github.com/RustCrypto/utils/commit/088c596b0076bb5d84ded9c43a79d1086d969f5c"><code>088c596</code></a> add input2 method to block-buffer</li>
<li>Additional commits viewable in <a href="https://github.com/RustCrypto/utils/compare/block-buffer-v0.7.0...block-buffer-v0.7.3">compare view</a></li>
</ul>
</details>
<br />

[![Dependabot compatibility score](https://api.dependabot.com/badges/compatibility_score?dependency-name=block-buffer&package-manager=cargo&previous-version=0.7.0&new-version=0.7.3)](https://dependabot.com/compatibility-score/?dependency-name=block-buffer&package-manager=cargo&previous-version=0.7.0&new-version=0.7.3)

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