Bump Fronter.NET from bd77373 to 55ecee7 (#2337)

Bumps
[Fronter.NET](https://github.com/ParadoxGameConverters/Fronter.NET) from
`bd77373` to `55ecee7`.
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/ParadoxGameConverters/Fronter.NET/commit/55ecee7827ac5d9a3025b3557e2fd905c2b39350"><code>55ecee7</code></a>
Bump AWSSDK.S3 from 3.7.406.3 to 3.7.406.4 in /Fronter.NET (<a
href="https://redirect.github.com/ParadoxGameConverters/Fronter.NET/issues/691">#691</a>)</li>
<li><a
href="https://github.com/ParadoxGameConverters/Fronter.NET/commit/2f3600998c41e4ed38462411231464786ec394c8"><code>2f36009</code></a>
Add dotnet-sdk to dependabot (<a
href="https://redirect.github.com/ParadoxGameConverters/Fronter.NET/issues/690">#690</a>)</li>
<li>See full diff in <a
href="https://github.com/ParadoxGameConverters/Fronter.NET/compare/bd77373e70345900e87f472c542076ae2500f7cc...55ecee7827ac5d9a3025b3557e2fd905c2b39350">compare
view</a></li>
</ul>
</details>
<br />


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</details>

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>