Bump SixLabors.ImageSharp from 2.1.10 to 2.1.11

---
updated-dependencies:
- dependency-name: SixLabors.ImageSharp
  dependency-version: 2.1.11
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

cTabIRL/QrFontBuilder/QrFontBuilder.csproj

@@ -7,7 +7,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Win32.Registry" Version="4.7.0" />
-    <PackageReference Include="SixLabors.ImageSharp" Version="2.1.10" />
+    <PackageReference Include="SixLabors.ImageSharp" Version="2.1.11" />
   </ItemGroup>
 
 </Project>