Bump SixLabors.ImageSharp and SixLabors.ImageSharp.Drawing

Bumps SixLabors.ImageSharp from 3.1.12 to 4.0.0
Bumps SixLabors.ImageSharp.Drawing from 2.1.7 to 3.0.0

---
updated-dependencies:
- dependency-name: SixLabors.ImageSharp
  dependency-version: 4.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
- dependency-name: SixLabors.ImageSharp.Drawing
  dependency-version: 3.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Directory.Packages.props

@@ -17,8 +17,8 @@
     <PackageVersion Include="Newtonsoft.Json" Version="13.0.4" />
     <PackageVersion Include="NPOI" Version="2.8.0" />
     <PackageVersion Include="NLog" Version="6.1.3" />
-    <PackageVersion Include="SixLabors.ImageSharp" Version="3.1.12" />
-    <PackageVersion Include="SixLabors.ImageSharp.Drawing" Version="2.1.7" />
+    <PackageVersion Include="SixLabors.ImageSharp" Version="4.0.0" />
+    <PackageVersion Include="SixLabors.ImageSharp.Drawing" Version="3.0.0" />
     <PackageVersion Include="Spectre.Console" Version="0.55.2" />
     <PackageVersion Include="SSH.NET" Version="2025.1.0" />
     <PackageVersion Include="Terminal.Gui" Version="1.19.0" />