Revert "nuget: bump SixLabors.ImageSharp from 1.0.4 to 2.1.3 (#3976)"

This reverts commit 9677ddaa5d8424604bdbf17496f8a878855a118d.

SixLabors.ImageShar switched to a shady and vague license starting with 2.x
without mentioning it on their changelog.

As a result we are staying on 1.x (licensed under Apache-2) and will
seak an alternative package.

Ryujinx.Ava/Ryujinx.Ava.csproj

@@ -38,7 +38,7 @@
     <PackageReference Include="Silk.NET.Vulkan.Extensions.KHR" Version="2.16.0" />
     <PackageReference Include="SPB" Version="0.0.4-build28" />
     <PackageReference Include="SharpZipLib" Version="1.4.1" />
-    <PackageReference Include="SixLabors.ImageSharp" Version="2.1.3" />
+    <PackageReference Include="SixLabors.ImageSharp" Version="1.0.4" />
   </ItemGroup>
 
   <ItemGroup>

Ryujinx.Ava/Ui/Windows/IconColorPicker.cs

@@ -125,7 +125,7 @@ namespace Ryujinx.Ava.Ui.Windows
 
         public static Bgra32[] GetBuffer(Image<Bgra32> image)
         {
-            return image.DangerousTryGetSinglePixelMemory(out var data) ? data.ToArray() : new Bgra32[0];
+            return image.TryGetSinglePixelSpan(out var data) ? data.ToArray() : new Bgra32[0];
         }
 
         private static int GetColorScore(Dictionary<int, int> dominantColorBin, int maxHitCount, PaletteColor color)

Ryujinx.HLE/HOS/Applets/SoftwareKeyboard/SoftwareKeyboardRendererBase.cs

@@ -549,12 +549,12 @@ namespace Ryujinx.HLE.HOS.Applets.SoftwareKeyboard
 
                 // Convert the pixel format used in the image to the one used in the Switch surface.
 
-                if (!_surface.DangerousTryGetSinglePixelMemory(out Memory<Argb32> pixels))
+                if (!_surface.TryGetSinglePixelSpan(out Span<Argb32> pixels))
                 {
                     return;
                 }
 
-                _bufferData = MemoryMarshal.AsBytes(pixels.Span).ToArray();
+                _bufferData = MemoryMarshal.AsBytes(pixels).ToArray();
                 Span<uint> dataConvert = MemoryMarshal.Cast<byte, uint>(_bufferData);
 
                 Debug.Assert(_bufferData.Length == _surfaceInfo.Size);

Ryujinx.HLE/Ryujinx.HLE.csproj

@@ -24,7 +24,7 @@
     <PackageReference Include="Concentus" Version="1.1.7" />
     <PackageReference Include="LibHac" Version="0.17.0" />
     <PackageReference Include="MsgPack.Cli" Version="1.0.1" />
-    <PackageReference Include="SixLabors.ImageSharp" Version="2.1.3" />
+    <PackageReference Include="SixLabors.ImageSharp" Version="1.0.4" />
     <PackageReference Include="SixLabors.ImageSharp.Drawing" Version="1.0.0-beta11" />
     <PackageReference Include="System.IdentityModel.Tokens.Jwt" Version="6.25.0" />
   </ItemGroup>

Ryujinx/Ryujinx.csproj

@@ -27,7 +27,7 @@
     <PackageReference Include="OpenTK.Graphics" Version="4.7.5" />
     <PackageReference Include="SPB" Version="0.0.4-build28" />
     <PackageReference Include="SharpZipLib" Version="1.4.1" />
-    <PackageReference Include="SixLabors.ImageSharp" Version="2.1.3" />
+    <PackageReference Include="SixLabors.ImageSharp" Version="1.0.4" />
   </ItemGroup>
 
   <ItemGroup>