chore(deps): Bump net-imap from 0.4.19 to 0.4.20 (#11386)

Bumps [net-imap](https://github.com/ruby/net-imap) from 0.4.19 to
0.4.20.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/ruby/net-imap/releases">net-imap's
releases</a>.</em></p>
<blockquote>
<h2>v0.4.20</h2>
<h2>What's Changed</h2>
<p>This release backports two features to prevent unbounded memory use:
the <code>response_handlers</code> keyword argument to
<code>Net::IMAP.new</code> so response handlers can be added before the
server can send any responses (<a
href="https://redirect.github.com/ruby/net-imap/pull/427">ruby/net-imap#427</a>),
and the <code>max_response_size</code> config attribute (<a
href="https://redirect.github.com/ruby/net-imap/pull/445">ruby/net-imap#445</a>).</p>
<blockquote>
<p>[!NOTE]
The default <code>max_response_size</code> is <code>nil</code>
(unlimited), to avoid backward compatibility issues with secure
connections to trusted servers that are well-behaved. It can be
configured more conservatively to guard against untrusted servers (for
example, connecting to user-provided hostnames). <em>It is the
responsibility of <code>net-imap</code> users to configure their client
appropriately for the server they are connecting to.</em></p>
</blockquote>
<h3>Added</h3>
<ul>
<li>✨ Add <code>response_handlers</code> kwarg to
<code>Net::IMAP.new</code> by <a
href="https://github.com/nevans"><code>@​nevans</code></a> in <a
href="https://redirect.github.com/ruby/net-imap/pull/427">ruby/net-imap#427</a>
<ul>
<li>Backports <a
href="https://redirect.github.com/ruby/net-imap/issues/419">#419</a></li>
</ul>
</li>
<li>✨ Limit max_response_size by <a
href="https://github.com/nevans"><code>@​nevans</code></a> in <a
href="https://redirect.github.com/ruby/net-imap/pull/445">ruby/net-imap#445</a>
<ul>
<li>Backports <a
href="https://redirect.github.com/ruby/net-imap/issues/444">#444</a></li>
</ul>
</li>
</ul>
<h3>Documentation</h3>
<ul>
<li>📚 Backport documentation to v0.4 by <a
href="https://github.com/nevans"><code>@​nevans</code></a> in <a
href="https://redirect.github.com/ruby/net-imap/pull/426">ruby/net-imap#426</a>
<ul>
<li>Backports <a
href="https://redirect.github.com/ruby/net-imap/issues/418">#418</a>, <a
href="https://redirect.github.com/ruby/net-imap/issues/420">#420</a>,
documentation only from <a
href="https://redirect.github.com/ruby/net-imap/issues/416">#416</a>,
and <a
href="https://redirect.github.com/ruby/net-imap/issues/424">#424</a></li>
</ul>
</li>
</ul>
<h3>Other Changes</h3>
<ul>
<li>♻️ Update versioned default configs by <a
href="https://github.com/nevans"><code>@​nevans</code></a> in <a
href="https://redirect.github.com/ruby/net-imap/pull/413">ruby/net-imap#413</a>
<ul>
<li>Backports <a
href="https://redirect.github.com/ruby/net-imap/issues/412">#412</a></li>
</ul>
</li>
<li>♻️ Refactor <code>get_response</code> by <a
href="https://github.com/nevans"><code>@​nevans</code></a> in <a
href="https://redirect.github.com/ruby/net-imap/pull/431">ruby/net-imap#431</a>
<ul>
<li>Backports <a
href="https://redirect.github.com/ruby/net-imap/issues/422">#422</a></li>
</ul>
</li>
<li>♻️ Rational config versions by <a
href="https://github.com/nevans"><code>@​nevans</code></a> in <a
href="https://redirect.github.com/ruby/net-imap/pull/430">ruby/net-imap#430</a>
<ul>
<li>Backports <a
href="https://redirect.github.com/ruby/net-imap/issues/429">#429</a></li>
</ul>
</li>
<li>♻️ Extract ResponseReader from get_response by <a
href="https://github.com/nevans"><code>@​nevans</code></a> in <a
href="https://redirect.github.com/ruby/net-imap/pull/434">ruby/net-imap#434</a>
<ul>
<li>Backports <a
href="https://redirect.github.com/ruby/net-imap/issues/433">#433</a></li>
</ul>
</li>
<li>♻️ Refactoring by <a
href="https://github.com/nevans"><code>@​nevans</code></a> in <a
href="https://redirect.github.com/ruby/net-imap/pull/436">ruby/net-imap#436</a>
<ul>
<li>Backports <a
href="https://redirect.github.com/ruby/net-imap/issues/417">#417</a> and
<a
href="https://redirect.github.com/ruby/net-imap/issues/435">#435</a></li>
</ul>
</li>
</ul>
<h3>Miscellaneous</h3>
<ul>
<li>✅ Various test improvements to v0.4 by <a
href="https://github.com/nevans"><code>@​nevans</code></a> in <a
href="https://redirect.github.com/ruby/net-imap/pull/425">ruby/net-imap#425</a>
<ul>
<li>Backports <a
href="https://redirect.github.com/ruby/net-imap/issues/414">#414</a>, <a
href="https://redirect.github.com/ruby/net-imap/issues/415">#415</a>, <a
href="https://redirect.github.com/ruby/net-imap/issues/421">#421</a>,
and <code>assert_pattern</code> from minitest (originally in <a
href="https://redirect.github.com/ruby/net-imap/issues/333">#333</a>)</li>
</ul>
</li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/ruby/net-imap/compare/v0.4.19...v0.4.20">https://github.com/ruby/net-imap/compare/v0.4.19...v0.4.20</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="5b8f9aece9"><code>5b8f9ae</code></a>
🔖 Bump version to 0.4.20</li>
<li><a
href="8222a369ce"><code>8222a36</code></a>
🔀 Merge pull request <a
href="https://redirect.github.com/ruby/net-imap/issues/445">#445</a>
from ruby/backport/v0.4-max_response_size</li>
<li><a
href="641c4c451e"><code>641c4c4</code></a>
✅ Fix backport compatibility with ruby 2.7</li>
<li><a
href="19bea631c3"><code>19bea63</code></a>
✨ Make max_response_size configurable</li>
<li><a
href="ddcaabd4fe"><code>ddcaabd</code></a>
✨ Limit max response size to 512MiB (hard-coded)</li>
<li><a
href="2ca4dbcaa4"><code>2ca4dbc</code></a>
🔀 Merge pull request <a
href="https://redirect.github.com/ruby/net-imap/issues/436">#436</a>
from ruby/backport/v0.4-refactor-config-and-respons...</li>
<li><a
href="9279f8aa11"><code>9279f8a</code></a>
✅ Fix backport compatibility with ruby 2.7</li>
<li><a
href="0e27fc1224"><code>0e27fc1</code></a>
♻️ Save ResponseReader ivars: <a
href="https://github.com/buff"><code>@​buff</code></a> &amp; <a
href="https://github.com/literal"><code>@​literal</code></a>_size</li>
<li><a
href="17064cd2f0"><code>17064cd</code></a>
✅ Fix backport compatibility with ruby 2.7</li>
<li><a
href="e4bb73453c"><code>e4bb734</code></a>
✨ Fix Config::AttrTypeCoercion for Ractor sharing</li>
<li>Additional commits viewable in <a
href="https://github.com/ruby/net-imap/compare/v0.4.19...v0.4.20">compare
view</a></li>
</ul>
</details>
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Gemfile.lock

@@ -485,7 +485,7 @@ GEM
       uri
     net-http-persistent (4.0.2)
       connection_pool (~> 2.2)
-    net-imap (0.4.19)
+    net-imap (0.4.20)
       date
       net-protocol
     net-pop (0.1.2)