Bump SixLabors.ImageSharp from 3.1.1 to 3.1.2 (#314)

Bumps [SixLabors.ImageSharp](https://github.com/SixLabors/ImageSharp)
from 3.1.1 to 3.1.2.
<details>
<summary>Release notes</summary>
<p><em>Sourced from <a
href="https://github.com/SixLabors/ImageSharp/releases">SixLabors.ImageSharp's
releases</a>.</em></p>
<blockquote>
<h2>v3.1.2</h2>
<h2>What's Changed</h2>
<ul>
<li>Fix Paeth Filter decode on platforms that do not support Ssse3 by <a
href="https://github.com/JimBobSquarePants"><code>@​JimBobSquarePants</code></a>
in <a
href="https://redirect.github.com/SixLabors/ImageSharp/pull/2618">SixLabors/ImageSharp#2618</a></li>
<li>Backport: Fix WebP animation speed bug by <a
href="https://github.com/JimBobSquarePants"><code>@​JimBobSquarePants</code></a>
in <a
href="https://redirect.github.com/SixLabors/ImageSharp/pull/2637">SixLabors/ImageSharp#2637</a></li>
</ul>
<p><strong>Full Changelog</strong>: <a
href="https://github.com/SixLabors/ImageSharp/compare/v3.1.1...v3.1.2">https://github.com/SixLabors/ImageSharp/compare/v3.1.1...v3.1.2</a></p>
</blockquote>
</details>
<details>
<summary>Commits</summary>
<ul>
<li><a
href="https://github.com/SixLabors/ImageSharp/commit/72d603bcc482523859f277884059af8ab602cb5c"><code>72d603b</code></a>
Merge pull request <a
href="https://redirect.github.com/SixLabors/ImageSharp/issues/2637">#2637</a>
from SixLabors/backport/webp-milliseconds</li>
<li><a
href="https://github.com/SixLabors/ImageSharp/commit/6570fc6c7446d594e20bc8c85e1404d48fc59862"><code>6570fc6</code></a>
Update WebpFrameMetadata.cs</li>
<li><a
href="https://github.com/SixLabors/ImageSharp/commit/4b162dbadff6e2e4f9ec7e865a654bbc22769fd6"><code>4b162db</code></a>
Merge pull request <a
href="https://redirect.github.com/SixLabors/ImageSharp/issues/2618">#2618</a>
from SixLabors/js/fix-sse3-paeth</li>
<li><a
href="https://github.com/SixLabors/ImageSharp/commit/9672d48bcc1bf858200c8f321b64b68986196e0d"><code>9672d48</code></a>
Fix Ssse3 Path decode</li>
<li>See full diff in <a
href="https://github.com/SixLabors/ImageSharp/compare/v3.1.1...v3.1.2">compare
view</a></li>
</ul>
</details>
<br />


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</details>

Refresh.GameServer/Refresh.GameServer.csproj

@@ -72,7 +72,7 @@
       <PackageReference Include="Pfim" Version="0.11.2" />
       <PackageReference Include="Realm" Version="11.6.1" />
       <PackageReference Include="SharpZipLib" Version="1.4.2" />
-      <PackageReference Include="SixLabors.ImageSharp" Version="3.1.1" />
+      <PackageReference Include="SixLabors.ImageSharp" Version="3.1.2" />
       <PackageReference Include="EasyHotReload" Version="1.0.0" />
     </ItemGroup>