Bump pigeon from 15.0.3 to 16.0.0 in /add_to_app/books/flutter_module_books (#2137)

Bumps [pigeon](https://github.com/flutter/packages/tree/main/packages)
from 15.0.3 to 16.0.0.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="a5bb26d641"><code>a5bb26d</code></a>
[pigeon] java non null void (<a
href="https://github.com/flutter/packages/tree/main/packages/issues/5786">#5786</a>)</li>
<li><a
href="c6b86c5108"><code>c6b86c5</code></a>
[file_selector_android] Attempt to close system dialogs before
integration te...</li>
<li><a
href="7beab0d305"><code>7beab0d</code></a>
[url_launcher] Add <code>InAppBrowserConfiguration</code> parameter (<a
href="https://github.com/flutter/packages/tree/main/packages/issues/5758">#5758</a>)</li>
<li><a
href="31fc7b5dd0"><code>31fc7b5</code></a>
bump mockito across repo to 5.4.4 (<a
href="https://github.com/flutter/packages/tree/main/packages/issues/5794">#5794</a>)</li>
<li>See full diff in <a
href="https://github.com/flutter/packages/commits/pigeon-v16.0.0/packages">compare
view</a></li>
</ul>
</details>
<br />


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add_to_app/books/flutter_module_books/pubspec.yaml

@@ -15,7 +15,7 @@ dependencies:
 dev_dependencies:
   analysis_defaults:
     path: ../../../analysis_defaults
-  pigeon: ">=11.0.0 <16.0.0"
+  pigeon: ">=11.0.0 <17.0.0"
   flutter_test:
     sdk: flutter