[chore(cargo)](deps): Bump signature from 2.1.0 to 2.2.0 (#430)

Bumps [signature](https://github.com/RustCrypto/traits) from 2.1.0 to
2.2.0.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/RustCrypto/traits/commit/be7598fa15d5a64aef12290cef3cada5913d3896"><code>be7598f</code></a>
signature v2.2.0 (<a
href="https://redirect.github.com/RustCrypto/traits/issues/1397">#1397</a>)</li>
<li><a
href="https://github.com/RustCrypto/traits/commit/7716a995ec5e6e70959732d7fa9c2d6bfdf4bbdc"><code>7716a99</code></a>
signature: bump <code>hex-literal</code> to v0.4 (<a
href="https://redirect.github.com/RustCrypto/traits/issues/1396">#1396</a>)</li>
<li><a
href="https://github.com/RustCrypto/traits/commit/c2a8466861381a4a1b5911cefa54c705bb752027"><code>c2a8466</code></a>
signature_derive v2.1.0 (<a
href="https://redirect.github.com/RustCrypto/traits/issues/1395">#1395</a>)</li>
<li><a
href="https://github.com/RustCrypto/traits/commit/11e7c7361167de9bb89fb1f7103f0013d36ebcd7"><code>11e7c73</code></a>
signature_derive: match directory name with crate (<a
href="https://redirect.github.com/RustCrypto/traits/issues/1394">#1394</a>)</li>
<li><a
href="https://github.com/RustCrypto/traits/commit/c85a5b815b3705fb5040307c3f5a4e06316b4c95"><code>c85a5b8</code></a>
async-signature v0.4.0 (<a
href="https://redirect.github.com/RustCrypto/traits/issues/1393">#1393</a>)</li>
<li><a
href="https://github.com/RustCrypto/traits/commit/6e7ee07546ad42b9aba395ba15092199f0025545"><code>6e7ee07</code></a>
cipher: stream cipher improvements (<a
href="https://redirect.github.com/RustCrypto/traits/issues/1388">#1388</a>)</li>
<li><a
href="https://github.com/RustCrypto/traits/commit/2b4f64886fd3d5ceaffcde8c3bed3ff632472a66"><code>2b4f648</code></a>
async-signature: re-add 'static bound (<a
href="https://redirect.github.com/RustCrypto/traits/issues/1392">#1392</a>)</li>
<li><a
href="https://github.com/RustCrypto/traits/commit/5b2f9cb26633bc11ab923e463dba305207d10856"><code>5b2f9cb</code></a>
Move <code>async-signature</code> and <code>signature-derive</code> to
toplevel (<a
href="https://redirect.github.com/RustCrypto/traits/issues/1391">#1391</a>)</li>
<li><a
href="https://github.com/RustCrypto/traits/commit/c4cd5eb72260ec6c432980005a128fbb0064fc00"><code>c4cd5eb</code></a>
(async-)signature: MSRV 1.60 (<a
href="https://redirect.github.com/RustCrypto/traits/issues/1387">#1387</a>)</li>
<li><a
href="https://github.com/RustCrypto/traits/commit/b3313d9a9594cf1df727668e7fa9da9eace30c8a"><code>b3313d9</code></a>
digest: add DynDigestWithOid wrapper trait (<a
href="https://redirect.github.com/RustCrypto/traits/issues/1390">#1390</a>)</li>
<li>Additional commits viewable in <a
href="https://github.com/RustCrypto/traits/compare/signature-v2.1.0...signature-v2.2.0">compare
view</a></li>
</ul>
</details>
<br />


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homestar-core/Cargo.toml

@@ -39,7 +39,7 @@ once_cell = { version = "1.18", default-features = false, optional = true }
 proptest = { version = "1.2", optional = true }
 rand = { workspace = true }
 serde = { workspace = true }
-signature = "2.0"
+signature = "2.2"
 thiserror = { workspace = true }
 tracing = { workspace = true }
 ucan = { workspace = true }