Bump go_router from 9.1.1 to 10.0.0 in /testing_app (#1965)

Bumps
[go_router](https://github.com/flutter/packages/tree/main/packages) from
9.1.1 to 10.0.0.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="88a48ffb11"><code>88a48ff</code></a>
[go_router] Replaces uri related properties in GoRouterState (<a
href="https://github.com/flutter/packages/tree/main/packages/issues/4392">#4392</a>)</li>
<li><a
href="43052d9a88"><code>43052d9</code></a>
[webview_flutter_wkwebview] Updates pigeon version to
<code>10.1.4</code> (<a
href="https://github.com/flutter/packages/tree/main/packages/issues/4548">#4548</a>)</li>
<li><a
href="caabb6fc85"><code>caabb6f</code></a>
[pigeon] Adds package name to method channel. (<a
href="https://github.com/flutter/packages/tree/main/packages/issues/4443">#4443</a>)</li>
<li><a
href="e6a71440d8"><code>e6a7144</code></a>
[go_router] Remove unused dependency (<a
href="https://github.com/flutter/packages/tree/main/packages/issues/4545">#4545</a>)</li>
<li><a
href="1af4d1a40a"><code>1af4d1a</code></a>
[go_router_builder] Removes <code>path_to_regexp</code> from the
dependencies (<a
href="https://github.com/flutter/packages/tree/main/packages/issues/4524">#4524</a>)</li>
<li><a
href="203ad04a71"><code>203ad04</code></a>
[google_maps_flutter_web] Adds options for gesture handling and tilt
controls...</li>
<li><a
href="896131fa03"><code>896131f</code></a>
[url_launcher_android] Set <code>buildFeatures.buildConfig</code> to
true for compatibil...</li>
<li>See full diff in <a
href="https://github.com/flutter/packages/commits/go_router-v10.0.0/packages">compare
view</a></li>
</ul>
</details>
<br />


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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Brett Morgan <brett.morgan@gmail.com>

testing_app/pubspec.yaml

@@ -12,7 +12,7 @@ dependencies:
 
   cupertino_icons: ^1.0.3
   provider: ^6.0.2
-  go_router: ">=7.0.0 <10.0.0"
+  go_router: ^10.0.0
 
 dev_dependencies:
   analysis_defaults: