Bump sha2 from 0.10.2 to 0.10.6 in /packer (#4107)

Summary:
Bumps [sha2](https://github.com/RustCrypto/hashes) from 0.10.2 to 0.10.6.
<details>
<summary>Commits</summary>
<ul>
<li><a href="1731ced4a1"><code>1731ced</code></a> Add OID support (<a href="https://github-redirect.dependabot.com/RustCrypto/hashes/issues/405">https://github.com/facebook/flipper/issues/405</a>)</li>
<li><a href="cc523733e5"><code>cc52373</code></a> build(deps): bump cpufeatures from 0.2.4 to 0.2.5 (<a href="https://github-redirect.dependabot.com/RustCrypto/hashes/issues/403">https://github.com/facebook/flipper/issues/403</a>)</li>
<li><a href="52def11cfe"><code>52def11</code></a> Fix MSRV issues by re-releasing gost94 and fsb (<a href="https://github-redirect.dependabot.com/RustCrypto/hashes/issues/402">https://github.com/facebook/flipper/issues/402</a>)</li>
<li><a href="b1c5032fbc"><code>b1c5032</code></a> Fix MSRV issues by re-releasing sha1, sha2, sha3, md5, and whirlpool. Take 2....</li>
<li><a href="db5af59cd4"><code>db5af59</code></a> Fix MSRV issues by re-releasing sha1, sha2, sha3, md5, and whirlpool (<a href="https://github-redirect.dependabot.com/RustCrypto/hashes/issues/399">https://github.com/facebook/flipper/issues/399</a>)</li>
<li><a href="b74be34693"><code>b74be34</code></a> Remove html_root_url (<a href="https://github-redirect.dependabot.com/RustCrypto/hashes/issues/393">https://github.com/facebook/flipper/issues/393</a>)</li>
<li><a href="38ea35559c"><code>38ea355</code></a> Release md5 v0.10.2, sha1 v0.10.2, sha2 v0.10.3, whirlpool v0.10.2 (<a href="https://github-redirect.dependabot.com/RustCrypto/hashes/issues/392">https://github.com/facebook/flipper/issues/392</a>)</li>
<li><a href="4c7a3fa240"><code>4c7a3fa</code></a> build(deps): bump cpufeatures from 0.2.3 to 0.2.4 (<a href="https://github-redirect.dependabot.com/RustCrypto/hashes/issues/389">https://github.com/facebook/flipper/issues/389</a>)</li>
<li><a href="e5ad181cdb"><code>e5ad181</code></a> Ignore <code>asm</code> feature on unsupported targets (<a href="https://github-redirect.dependabot.com/RustCrypto/hashes/issues/388">https://github.com/facebook/flipper/issues/388</a>)</li>
<li><a href="79af27adf5"><code>79af27a</code></a> Expand on DynDigest example in README (<a href="https://github-redirect.dependabot.com/RustCrypto/hashes/issues/390">https://github.com/facebook/flipper/issues/390</a>)</li>
<li>Additional commits viewable in <a href="https://github.com/RustCrypto/hashes/compare/sha2-v0.10.2...sha2-v0.10.6">compare view</a></li>
</ul>
</details>
<br />

[![Dependabot compatibility score](https://dependabot-badges.githubapp.com/badges/compatibility_score?dependency-name=sha2&package-manager=cargo&previous-version=0.10.2&new-version=0.10.6)](https://docs.github.com/en/github/managing-security-vulnerabilities/about-dependabot-security-updates#about-compatibility-scores)

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</details>

Pull Request resolved: https://github.com/facebook/flipper/pull/4107

Reviewed By: aigoncharov

Differential Revision: D40335007

Pulled By: mweststrate

fbshipit-source-id: 4bc6665aa64b39e209f22e42f047edbefd31e129

packer/Cargo.toml

@@ -16,7 +16,7 @@ tar = "0.4.38"
 serde = { version = "^1", features = ["derive"] }
 serde_yaml = "0.9.13"
 anyhow = "^1"
-sha2 = "0.10.2"
+sha2 = "0.10.6"
 data-encoding = "^2"
 serde_json = "^1"
 rayon = "^1.5"