Bump sequel from 5.87.0 to 5.88.0 (#722)

Bumps [sequel](https://github.com/jeremyevans/sequel) from 5.87.0 to
5.88.0.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/jeremyevans/sequel/blob/master/CHANGELOG">sequel's
changelog</a>.</em></p>
<blockquote>
<p>=== 5.88.0 (2025-01-01)</p>
<ul>
<li>
<p>Add subset_static_cache plugin for statically caching subsets of a
model class (jeremyevans)</p>
</li>
<li>
<p>Allow class-level dataset methods to be overridable and call super to
get the default behavior (jeremyevans)</p>
</li>
<li>
<p>Support column aliases with data types on PostgreSQL, useful for
selecting from functions returning records (jeremyevans)</p>
</li>
<li>
<p>Break ties in timestamp migrator version handling using lexicographic
sort of rest of migration filename (jeremyevans)</p>
</li>
<li>
<p>Fix strict_unused_block warnings when running specs on Ruby 3.4
(jeremyevans)</p>
</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/jeremyevans/sequel/commit/d0504ef88d01d680bf6b322b6c87a0fc87f49b34"><code>d0504ef</code></a>
Bump version to 5.88.0</li>
<li><a
href="https://github.com/jeremyevans/sequel/commit/530eae6867da00491b1a7ad068997512101c437a"><code>530eae6</code></a>
Add Ruby 3.4 to CI</li>
<li><a
href="https://github.com/jeremyevans/sequel/commit/f8274556d5be4e6229c2f25f095c6e6c13a0ae8b"><code>f827455</code></a>
Get back to 100% code coverage in static_cache_cache plugin</li>
<li><a
href="https://github.com/jeremyevans/sequel/commit/42a8b305cd105b79d2313d8ef0c83d4b1db4916b"><code>42a8b30</code></a>
Add subset_static_cache plugin for statically caching subsets of a model
class</li>
<li><a
href="https://github.com/jeremyevans/sequel/commit/14fb13057c342ffaa1989d25b466575f1954041e"><code>14fb130</code></a>
Allow class-level dataset methods to be overridable and call super to
get the...</li>
<li><a
href="https://github.com/jeremyevans/sequel/commit/eba1a8e029d6bc1f1ee17ec1e48d501eb289c7d9"><code>eba1a8e</code></a>
Make PostgreSQL specs pass when PostgreSQL is not built with libxml
support</li>
<li><a
href="https://github.com/jeremyevans/sequel/commit/cc4a0ff798416aaa4e639c12f01450c23ddbd15b"><code>cc4a0ff</code></a>
Support column aliases with data types on PostgreSQL, useful for
selecting fr...</li>
<li><a
href="https://github.com/jeremyevans/sequel/commit/31d28f2650df8d07af6d701dfab9797293770e28"><code>31d28f2</code></a>
Break ties in timestamp migrator version handling using lexicographic
sort of...</li>
<li><a
href="https://github.com/jeremyevans/sequel/commit/267daa57133191eb8da8625d02f45a0c8304416b"><code>267daa5</code></a>
Fix strict_unused_block warnings when running specs on Ruby 3.4</li>
<li><a
href="https://github.com/jeremyevans/sequel/commit/7a520bb9c013947bd60d9170e727fb52a2287ba1"><code>7a520bb</code></a>
Avoid shape-related performance warning for Sequel::SQL::StringAgg</li>
<li>Additional commits viewable in <a
href="https://github.com/jeremyevans/sequel/compare/5.87.0...5.88.0">compare
view</a></li>
</ul>
</details>
<br />


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Gemfile.lock

@@ -74,7 +74,7 @@ GEM
       rubocop (~> 1.0)
     ruby-progressbar (1.13.0)
     ruby2_keywords (0.0.5)
-    sequel (5.87.0)
+    sequel (5.88.0)
       bigdecimal
     sinatra (4.1.1)
       logger (>= 1.6.0)