Bump Fronter.NET from 20c6d1e to ad80b13 (#3092)

Bumps
[Fronter.NET](https://github.com/ParadoxGameConverters/Fronter.NET) from
`20c6d1e` to `ad80b13`.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/ParadoxGameConverters/Fronter.NET/commit/ad80b1373237274848b023bbc7ee53c7903ae3b4"><code>ad80b13</code></a>
Bump dependencies (<a
href="https://redirect.github.com/ParadoxGameConverters/Fronter.NET/issues/970">#970</a>)</li>
<li><a
href="https://github.com/ParadoxGameConverters/Fronter.NET/commit/812eea0af46ee97e604ed633f108a5b22e04107d"><code>812eea0</code></a>
Optimize the log grid (<a
href="https://redirect.github.com/ParadoxGameConverters/Fronter.NET/issues/971">#971</a>)</li>
<li>See full diff in <a
href="https://github.com/ParadoxGameConverters/Fronter.NET/compare/20c6d1ec68273f37cb783d137d30966b50888644...ad80b1373237274848b023bbc7ee53c7903ae3b4">compare
view</a></li>
</ul>
</details>
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