Update ImageSharp version to resolve CVE-2025-54575 (#94)

* Update ImageSharp version

* Update version

Author: mpewsey

src/ManiaMap/ManiaMap.csproj

@@ -14,7 +14,7 @@
     <RepositoryUrl>https://github.com/mpewsey/ManiaMap</RepositoryUrl>
     <PackageTags>procedural-generation;roguelike;metroidvania;videogames</PackageTags>
     <PackageLicenseExpression>BSD-3-Clause</PackageLicenseExpression>
-	<VersionPrefix>2.5.2</VersionPrefix>
+	<VersionPrefix>2.5.3</VersionPrefix>
 	<Configurations>Debug;Release;Unity</Configurations>
 	<PackageProjectUrl>https://mpewsey.github.io/ManiaMap/</PackageProjectUrl>
 	<GenerateDocumentationFile>True</GenerateDocumentationFile>
@@ -69,7 +69,7 @@
 
   <ItemGroup>
     <PackageReference Include="MPewsey.Common" Version="0.0.13" />
-    <PackageReference Include="SixLabors.ImageSharp" Version="2.1.10" />
+    <PackageReference Include="SixLabors.ImageSharp" Version="2.1.12" />
   </ItemGroup>
 
 </Project>