Bump anyhow from 1.0.72 to 1.0.74 in /cmd/pinniped-proxy (#6632)

Bumps [anyhow](https://github.com/dtolnay/anyhow) from 1.0.72 to 1.0.74.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/dtolnay/anyhow/releases">anyhow's
releases</a>.</em></p>
<blockquote>
<h2>1.0.74</h2>
<ul>
<li>Add bootstrap workaround to allow rustc to depend on anyhow (<a
href="https://redirect.github.com/dtolnay/anyhow/issues/320">#320</a>,
thanks <a
href="https://github.com/RalfJung"><code>@​RalfJung</code></a>)</li>
</ul>
<h2>1.0.73</h2>
<ul>
<li>Update backtrace support to nightly's new Error::provide API (<a
href="https://redirect.github.com/rust-lang/rust/pull/113464">rust-lang/rust#113464</a>,
<a
href="https://redirect.github.com/dtolnay/anyhow/issues/319">#319</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/dtolnay/anyhow/commit/cbade7d00a0a8808fe2830e00c19b5c44789272a"><code>cbade7d</code></a>
Release 1.0.74</li>
<li><a
href="https://github.com/dtolnay/anyhow/commit/0798a9a635edc46dd80a09b77f3238eb0d5fba7a"><code>0798a9a</code></a>
Reword bootstrap comment</li>
<li><a
href="https://github.com/dtolnay/anyhow/commit/61d86763da7d180206d4ce215863d9ae49d66c7d"><code>61d8676</code></a>
Merge pull request <a
href="https://redirect.github.com/dtolnay/anyhow/issues/320">#320</a>
from RalfJung/bootstrap</li>
<li><a
href="https://github.com/dtolnay/anyhow/commit/663c6633e39d194bed0048df1e8ea5b60ef00e73"><code>663c663</code></a>
don't run build probes in rustc bootstrap</li>
<li><a
href="https://github.com/dtolnay/anyhow/commit/e471b2b6506f5dac2ce1c6a58090c9cb0936f43e"><code>e471b2b</code></a>
Release 1.0.73</li>
<li><a
href="https://github.com/dtolnay/anyhow/commit/8cf1d150f7d512981a402e470070a00569dd2fd5"><code>8cf1d15</code></a>
Merge pull request <a
href="https://redirect.github.com/dtolnay/anyhow/issues/319">#319</a>
from dtolnay/errorprovide</li>
<li><a
href="https://github.com/dtolnay/anyhow/commit/31c8dff2cdc44773e5fe290881c9ce47cc3e1b21"><code>31c8dff</code></a>
Update to nightly's new Error::provide API</li>
<li><a
href="https://github.com/dtolnay/anyhow/commit/496b9584c4897f17969ce42302675d67e2c53b81"><code>496b958</code></a>
Ignore ignored_unit_patterns pedantic clippy lint in test suite</li>
<li><a
href="https://github.com/dtolnay/anyhow/commit/7fc0c073c4c31ef8664f699e9e4883b1c92b2fb6"><code>7fc0c07</code></a>
Revert &quot;Temporarily disable -Zrandomize-layout due to rustc
ICE&quot;</li>
<li><a
href="https://github.com/dtolnay/anyhow/commit/a1f510e47fad6466921a80d653ffc7a1064666eb"><code>a1f510e</code></a>
Temporarily disable -Zrandomize-layout due to rustc ICE</li>
<li>See full diff in <a
href="https://github.com/dtolnay/anyhow/compare/1.0.72...1.0.74">compare
view</a></li>
</ul>
</details>
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