Bump process_runner from 4.2.2 to 4.2.3 in /app_dart (#4867)

Bumps [process_runner](https://github.com/google/process_runner) from 4.2.2 to 4.2.3.
<details>
<summary>Changelog</summary>
<p><em>Sourced from <a href="https://github.com/google/process_runner/blob/main/CHANGELOG.md">process_runner's changelog</a>.</em></p>
<blockquote>
<h2>4.2.3</h2>
<ul>
<li>Propagate <code>includeParentEnvironment</code> to process manager (fixes
<a href="https://redirect.github.com/google/process_runner/issues/36">#36</a>)</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
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<li>See full diff in <a href="https://github.com/google/process_runner/commits">compare view</a></li>
</ul>
</details>
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Author: dependabot[bot]

app_dart/pubspec.yaml

@@ -42,7 +42,7 @@ dependencies:
   neat_cache: 2.0.4
   path: ^1.9.1
   process: ^5.0.3
-  process_runner: 4.2.2
+  process_runner: 4.2.3
   protobuf: 3.1.0
   retry: ^3.1.2
   truncate: 3.0.1