build(deps): bump flatpak/flatpak-github-actions from 6.5 to 6.6 (#9279)

Bumps
[flatpak/flatpak-github-actions](https://github.com/flatpak/flatpak-github-actions)
from 6.5 to 6.6.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/flatpak/flatpak-github-actions/releases">flatpak/flatpak-github-actions's
releases</a>.</em></p>
<blockquote>
<h2>v6.6</h2>
<ul>
<li>Specify full URL policy when mirroring screenshots</li>
<li>Fix restore cache keys to actually include arch</li>
</ul>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="92ae9851ad"><code>92ae985</code></a>
Fix restore cache keys to actually include arch</li>
<li><a
href="b8a638469e"><code>b8a6384</code></a>
Specify full URL policy when mirroring screenshots</li>
<li><a
href="6684584b07"><code>6684584</code></a>
Switch funding to flatpak instead</li>
<li><a
href="e5aa88fb51"><code>e5aa88f</code></a>
readme: Update flathub images list</li>
<li><a
href="b93832bada"><code>b93832b</code></a>
Sync readme from flathub's fork</li>
<li>See full diff in <a
href="10a3c29f01...92ae9851ad">compare
view</a></li>
</ul>
</details>
<br />


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</details>

.github/workflows/test.yml

@@ -1095,7 +1095,7 @@ jobs:
     needs: test
     steps:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
-      - uses: flatpak/flatpak-github-actions/flatpak-builder@10a3c29f0162516f0f68006be14c92f34bd4fa6c # v6.5
+      - uses: flatpak/flatpak-github-actions/flatpak-builder@92ae9851ad316786193b1fd3f40c4b51eb5cb101 # v6.6
         with:
           bundle: com.mitchellh.ghostty
           manifest-path: flatpak/com.mitchellh.ghostty.yml