Bump sigstore/cosign-installer from 3.8.2 to 3.9.0 (#3792)

Bumps
[sigstore/cosign-installer](https://github.com/sigstore/cosign-installer)
from 3.8.2 to 3.9.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/sigstore/cosign-installer/releases">sigstore/cosign-installer's
releases</a>.</em></p>
<blockquote>
<h2>v3.9.0</h2>
<h2>What's Changed</h2>
<ul>
<li>Bump actions/setup-go from 5.4.0 to 5.5.0 by <a
href="https://github.com/dependabot"><code>@​dependabot</code></a> in <a
href="https://redirect.github.com/sigstore/cosign-installer/pull/189">sigstore/cosign-installer#189</a></li>
<li>bump cosign install to use release v2.5.0 as default by <a
href="https://github.com/cpanato"><code>@​cpanato</code></a> in <a
href="https://redirect.github.com/sigstore/cosign-installer/pull/191">sigstore/cosign-installer#191</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/sigstore/cosign-installer/compare/v3...v3.9.0">https://github.com/sigstore/cosign-installer/compare/v3...v3.9.0</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/sigstore/cosign-installer/commit/fb28c2b6339dcd94da6e4cbcbc5e888961f6f8c3"><code>fb28c2b</code></a>
bump cosign install to use release v2.5.0 as default (<a
href="https://redirect.github.com/sigstore/cosign-installer/issues/191">#191</a>)</li>
<li><a
href="https://github.com/sigstore/cosign-installer/commit/e9a05e6d32d7ed22b5656cd874ef31af58d05bfa"><code>e9a05e6</code></a>
Bump actions/setup-go from 5.4.0 to 5.5.0 (<a
href="https://redirect.github.com/sigstore/cosign-installer/issues/189">#189</a>)</li>
<li>See full diff in <a
href="https://github.com/sigstore/cosign-installer/compare/3454372f43399081ed03b604cb2d021dabca52bb...fb28c2b6339dcd94da6e4cbcbc5e888961f6f8c3">compare
view</a></li>
</ul>
</details>
<br />


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