chore(deps): Bump moka from 0.12.3 to 0.12.4 (#1151)

Bumps [moka](https://github.com/moka-rs/moka) from 0.12.3 to 0.12.4.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/moka-rs/moka/blob/main/CHANGELOG.md">moka's
changelog</a>.</em></p>
<blockquote>
<h2>Version 0.12.4</h2>
<h3>Fixed</h3>
<ul>
<li>Ensure <code>crossbeam-epoch</code> to run GC when dropping a cache
(<a
href="https://redirect.github.com/moka-rs/moka/issues/384">#384</a>[gh-pull-0384]):
<ul>
<li><code>crossbeam-epoch</code> crate provides an epoch-based memory
reclamation scheme for
concurrent data structures. It is used by Moka cache to safely drop
cached
entries while they are still being accessed by other threads.</li>
<li><code>crossbeam-epoch</code> does the best to reclaim memory (drop
the entries evicted
from the cache) when the epoch is advanced. However, it does not
guarantee that
memory will be reclaimed immediately after the epoch is advanced. This
means
that entries can remain in the memory for a while after the cache is
dropped.</li>
<li>This fix ensures that, when a cache is dropped, the epoch is
advanced and
<code>crossbeam-epoch</code>'s thread local buffers are flushed, helping
to reclaim memory
immediately.</li>
<li>Note that there are still chances that some entries remain in the
memory for a
while after a cache is dropped. We are looking for alternatives to
<code>crossbeam-epoch</code> to improve this situation (e.g. <a
href="https://redirect.github.com/moka-rs/moka/issues/385">#385</a>[gh-issue-0385]).</li>
</ul>
</li>
</ul>
<h3>Added</h3>
<ul>
<li>Added an example for reinserting expired entries to the cache.
(<a
href="https://redirect.github.com/moka-rs/moka/issues/382">#382</a>[gh-pull-0382])</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/moka-rs/moka/commit/2e904db29b925cb1ddf41b410a6d059c4298ebf4"><code>2e904db</code></a>
Merge pull request <a
href="https://redirect.github.com/moka-rs/moka/issues/386">#386</a> from
moka-rs/prepare-0.12.4</li>
<li><a
href="https://github.com/moka-rs/moka/commit/a8bace71a0f24ff9de91d2b320869db4b91ad95c"><code>a8bace7</code></a>
Update the version in some doc comments</li>
<li><a
href="https://github.com/moka-rs/moka/commit/1c1d32e5e6c199c750ec9b437f5b36b0906667b3"><code>1c1d32e</code></a>
Merge pull request <a
href="https://redirect.github.com/moka-rs/moka/issues/387">#387</a> from
moka-rs/stabilize-flaky-drop-cache-test</li>
<li><a
href="https://github.com/moka-rs/moka/commit/865c68098c17e90afeeefae708945ab991d9ebc9"><code>865c680</code></a>
CI: Stabilize <code>ensure_gc_runs_when_dropping_cache</code> test for
<code>sync::Cache</code></li>
<li><a
href="https://github.com/moka-rs/moka/commit/22a994463a908da01bcbf6dff68f42fb1caa24e9"><code>22a9944</code></a>
CI: Stabilize <code>ensure_gc_runs_when_dropping_cache</code> test for
<code>sync::Cache</code></li>
<li><a
href="https://github.com/moka-rs/moka/commit/8439fb9d2e27134dffdc34bfc967bd00e934f1c4"><code>8439fb9</code></a>
Update the change log</li>
<li><a
href="https://github.com/moka-rs/moka/commit/521193a2ab64ed6c55c19dc361471fe96cfb1d35"><code>521193a</code></a>
Merge pull request <a
href="https://redirect.github.com/moka-rs/moka/issues/382">#382</a> from
moka-rs/reinsert-example</li>
<li><a
href="https://github.com/moka-rs/moka/commit/46c5f113a5387853a3559f6df011031b9a3eb6b1"><code>46c5f11</code></a>
CI: Disable an example <code>reinsert_expired_entries_sync</code> when
testing</li>
<li><a
href="https://github.com/moka-rs/moka/commit/81477d7735bfcaee54ed91857a598665c55eff27"><code>81477d7</code></a>
CI: Disable an example <code>reinsert_expired_entries_sync</code> when
testing</li>
<li><a
href="https://github.com/moka-rs/moka/commit/b3fa860db7ccdc3ca4c71c92446e46ff873a0de8"><code>b3fa860</code></a>
CI: Disable an example <code>reinsert_expired_entries_sync</code> when
testing</li>
<li>Additional commits viewable in <a
href="https://github.com/moka-rs/moka/compare/v0.12.3...v0.12.4">compare
view</a></li>
</ul>
</details>
<br />


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