Bump anyhow from 1.0.74 to 1.0.75 in /packer (#5055)

Summary:
Bumps [anyhow](https://github.com/dtolnay/anyhow) from 1.0.74 to 1.0.75.
<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>1.0.75</h2>
<ul>
<li>Partially work around rust-analyzer bug (<a href="https://redirect.github.com/rust-lang/rust-analyzer/issues/9911">rust-lang/rust-analyzer#9911</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="https://github.com/dtolnay/anyhow/commit/6485caebde8e5c8bc313cd1a5ff6d70e58670b42"><code>6485cae</code></a> Release 1.0.75</li>
<li><a href="https://github.com/dtolnay/anyhow/commit/238223af99dcd4ff41ad86e6ba7a0d2acb2d5ab5"><code>238223a</code></a> Work around ridiculous rust-analyzer behavior</li>
<li>See full diff in <a href="https://github.com/dtolnay/anyhow/compare/1.0.74...1.0.75">compare view</a></li>
</ul>
</details>
<br />

[![Dependabot compatibility score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=anyhow&package-manager=cargo&previous-version=1.0.74&new-version=1.0.75)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)

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</details>

Pull Request resolved: #5055

Reviewed By: lblasa

Differential Revision: D48685685

Pulled By: passy

fbshipit-source-id: a30912de6677237fb2ad11bd3648f1d9862898eb