Bump github.com/jackc/pgx/v5 from 5.7.3 to 5.7.4 (#4)

Bumps [github.com/jackc/pgx/v5](https://github.com/jackc/pgx) from 5.7.3
to 5.7.4.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a
href="https://github.com/jackc/pgx/blob/master/CHANGELOG.md">github.com/jackc/pgx/v5's
changelog</a>.</em></p>
<blockquote>
<h1>5.7.4 (March 24, 2025)</h1>
<ul>
<li>Fix / revert change to scanning JSON <code>null</code> (Felix
Röhrich)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/jackc/pgx/commit/04bcc0219dc3acf67f27e68decd6dffe97334779"><code>04bcc02</code></a>
Add v5.7.4 to changelog</li>
<li><a
href="https://github.com/jackc/pgx/commit/0e0a7d8344b035b96be53eda85e11c0aff14f212"><code>0e0a7d8</code></a>
Merge pull request <a
href="https://redirect.github.com/jackc/pgx/issues/2288">#2288</a> from
felix-roehrich/fr/fix-plan-scan</li>
<li><a
href="https://github.com/jackc/pgx/commit/63422c7d6cfe092af402f48e16729acd1e3bae1c"><code>63422c7</code></a>
revert change in if</li>
<li>See full diff in <a
href="https://github.com/jackc/pgx/compare/v5.7.3...v5.7.4">compare
view</a></li>
</ul>
</details>
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