build(deps): Bump once_cell from 1.19.0 to 1.20.1 (#596)

Bumps [once_cell](https://github.com/matklad/once_cell) from 1.19.0 to
1.20.1.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/matklad/once_cell/blob/master/CHANGELOG.md">once_cell's
changelog</a>.</em></p>
<blockquote>
<h2>1.20.1</h2>
<ul>
<li>Allow using <code>race</code> module using just
<code>portable_atomic</code>, without <code>critical_section</code> and
provide
better error messages on targets without atomic CAS instruction,
<a
href="https://redirect.github.com/matklad/once_cell/pull/265">#265</a>.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/matklad/once_cell/commit/3b9bd9b87257dc732b8220507b8c162eab097a43"><code>3b9bd9b</code></a>
release 1.20.1</li>
<li><a
href="https://github.com/matklad/once_cell/commit/f61508a632745197b64968c1941f94cce054149f"><code>f61508a</code></a>
Merge pull request <a
href="https://redirect.github.com/matklad/once_cell/issues/265">#265</a>
from taiki-e/portable-atomic</li>
<li><a
href="https://github.com/matklad/once_cell/commit/449e5d7b2d57ca101e364a0596e84c792a78d674"><code>449e5d7</code></a>
Add portable-atomic feature and disable portable-atomic/critical-section
by d...</li>
<li><a
href="https://github.com/matklad/once_cell/commit/72f7c2e5faed09e84aa1ffe26c25092c87954b98"><code>72f7c2e</code></a>
Merge pull request <a
href="https://redirect.github.com/matklad/once_cell/issues/260">#260</a>
from brodycj/propagate-critical-section-to-portable-a...</li>
<li><a
href="https://github.com/matklad/once_cell/commit/be6b6238fb96da85cb0d5217f6121f4c2ba764e2"><code>be6b623</code></a>
v1.20.0</li>
<li><a
href="https://github.com/matklad/once_cell/commit/f2d95bfe79ee7f268e92d7105a95d12e06b6c748"><code>f2d95bf</code></a>
update Cargo (dev-)dependencies; update Cargo.lock.msrv</li>
<li><a
href="https://github.com/matklad/once_cell/commit/dd6b5c2909d3deccb6aabcb665de07c819411094"><code>dd6b5c2</code></a>
ci: fix TEST_BETA with TEMPORARY WORKAROUND in RUSTFLAGS</li>
<li><a
href="https://github.com/matklad/once_cell/commit/7317eae758ff76ec7681caf231397f234059aa3d"><code>7317eae</code></a>
add <code>cargo test --workspace</code> to beginning of TEST task</li>
<li><a
href="https://github.com/matklad/once_cell/commit/bd54bf7aff264a2ea8d935e5da686471320a8322"><code>bd54bf7</code></a>
fix default-features flag for parking_lot_core in dependencies</li>
<li><a
href="https://github.com/matklad/once_cell/commit/bb70b9e7e689ce2493b515dcc4a1d96088e9ad2f"><code>bb70b9e</code></a>
cargo fmt updates</li>
<li>Additional commits viewable in <a
href="https://github.com/matklad/once_cell/compare/v1.19.0...v1.20.1">compare
view</a></li>
</ul>
</details>
<br />


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macro/Cargo.toml

@@ -15,7 +15,7 @@ proc-macro = true
 [dependencies]
 comrak = { version = "0.28.0", default-features = false }
 convert_case = "0.6.0"
-once_cell = "1.19.0"
+once_cell = "1.20.1"
 proc-macro2 = "1"
 quote = "1"
 regex = "1.11.0"