Bump lints from 4.0.0 to 5.0.0 in /code_sharing/shared (#2456)

Bumps [lints](https://github.com/dart-lang/lints) from 4.0.0 to 5.0.0.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a href="https://github.com/dart-lang/lints/releases">lints's releases</a>.</em></p>
<blockquote>
<h2>package:lints v5.0.0</h2>
<ul>
<li><code>recommended</code>:
<ul>
<li>added <a href="https://dart.dev/tools/linter-rules/invalid_runtime_check_with_js_interop_types">invalid_runtime_check_with_js_interop_types</a> (<a href="https://redirect.github.com/dart-lang/lints/issues/188">dart-lang/lints#188</a>)</li>
<li>added <a href="https://dart.dev/lints/unnecessary_library_name">unnecessary_library_name</a> (<a href="https://redirect.github.com/dart-lang/lints/issues/181">dart-lang/lints#181</a>)</li>
<li>removed <a href="https://dart.dev/tools/linter-rules/avoid_null_checks_in_equality_operators">avoid_null_checks_in_equality_operators</a> (<a href="https://redirect.github.com/dart-lang/lints/issues/200">dart-lang/lints#200</a>)</li>
</ul>
</li>
<li>Updated the SDK lower-bound to 3.5.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/dart-lang/lints/blob/main/CHANGELOG.md">lints's changelog</a>.</em></p>
<blockquote>
<h2>5.0.0</h2>
<ul>
<li><code>recommended</code>:
<ul>
<li>added <a href="https://dart.dev/tools/linter-rules/invalid_runtime_check_with_js_interop_types">invalid_runtime_check_with_js_interop_types</a> (<a href="https://redirect.github.com/dart-lang/lints/issues/188">dart-lang/lints#188</a>)</li>
<li>added <a href="https://dart.dev/lints/unnecessary_library_name">unnecessary_library_name</a> (<a href="https://redirect.github.com/dart-lang/lints/issues/181">dart-lang/lints#181</a>)</li>
<li>removed <a href="https://dart.dev/tools/linter-rules/avoid_null_checks_in_equality_operators">avoid_null_checks_in_equality_operators</a> (<a href="https://redirect.github.com/dart-lang/lints/issues/200">dart-lang/lints#200</a>)</li>
</ul>
</li>
<li>Updated the SDK lower-bound to 3.5.</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a href="af68bf0cba"><code>af68bf0</code></a> rev to 5.0.0 in preparation for publishing (<a href="https://redirect.github.com/dart-lang/lints/issues/210">#210</a>)</li>
<li><a href="9e4fd7deef"><code>9e4fd7d</code></a> Fixes formatting error in the rules.md table (<a href="https://redirect.github.com/dart-lang/lints/issues/206">#206</a>)</li>
<li><a href="6580f83e4c"><code>6580f83</code></a> Remove avoid_null_checks_in_equality_operators from recommended (<a href="https://redirect.github.com/dart-lang/lints/issues/201">#201</a>)</li>
<li><a href="894b5006c4"><code>894b500</code></a> add invalid_runtime_check_with_js_interop_types to the recommended lint set (...</li>
<li><a href="8f93c7998a"><code>8f93c79</code></a> add unnecessary_library_name to recommended (<a href="https://redirect.github.com/dart-lang/lints/issues/198">#198</a>)</li>
<li><a href="f6b5d36485"><code>f6b5d36</code></a> Bump dart-lang/setup-dart from 1.6.4 to 1.6.5 (<a href="https://redirect.github.com/dart-lang/lints/issues/194">#194</a>)</li>
<li><a href="09a9c88a53"><code>09a9c88</code></a> Bump actions/checkout from 4.1.6 to 4.1.7 (<a href="https://redirect.github.com/dart-lang/lints/issues/193">#193</a>)</li>
<li><a href="baaaa56163"><code>baaaa56</code></a> Bump actions/checkout from 4.1.4 to 4.1.6 (<a href="https://redirect.github.com/dart-lang/lints/issues/191">#191</a>)</li>
<li><a href="b254c7e374"><code>b254c7e</code></a> Update README.md (<a href="https://redirect.github.com/dart-lang/lints/issues/189">#189</a>)</li>
<li><a href="5fef5082a1"><code>5fef508</code></a> Tighten up the <code>gen_docs.dart</code> script. (<a href="https://redirect.github.com/dart-lang/lints/issues/187">#187</a>)</li>
<li>See full diff in <a href="https://github.com/dart-lang/lints/compare/v4.0.0...v5.0.0">compare view</a></li>
</ul>
</details>
<br />

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code_sharing/shared/lib/shared.dart

@@ -1,4 +1,4 @@
 /// Common data models required by our client and server.
-library shared;
+library;
 
 export 'src/models.dart';

code_sharing/shared/pubspec.yaml

@@ -13,5 +13,5 @@ dev_dependencies:
   build_runner: ^2.2.1
   freezed: ^2.1.1
   json_serializable: ^6.4.0
-  lints: ">=2.0.0 <5.0.0"
+  lints: ^5.0.0
   test: ^1.16.0