Fixes casting issue from AnyBitmap to SKBitmap on Linux

Title

System.NullReferenceException when casting from AnyBitmap to SKBitmap on Linux

Description

When I cast AnyBitmap to SKBitmap on Linux, the SkiaSharp native library (libSkiaSharp) is missing or not found in the expected locations. Therefore, I install the SkiaSharp.NativeAssets.Linux package in the same version as SkiaSharp to make it work.

Fixes #(issue number) DW-24

Type of change

Please select the relevant option by placing an 'x' inside the brackets, like this: [x].

[x] 🐛 Bug fix (non-breaking change which fixes an issue)
[ ] ✨ New feature (non-breaking change which adds functionality)
[ ] 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
[ ] 🏗️ Internal/structural update (non-breaking change that improves code quality, organization, or performance)
[ ] 📚 This change requires a documentation update
[ ] 🚀 DevOps build chain modification for release
[ ] 🤖 DevOps build chain modification for CI

How Has This Been Tested?

Run IronDrawing PR Validation

Checklist:

Please run through the checklist as much as possible and mark the items completed by placing an 'x' inside the brackets, like this: [x].

[x] My code follows the style guidelines of this project
[x] I have performed a self-review of my own code
[ ] I have commented my code, particularly in hard-to-understand areas
[ ] I have made corresponding changes to the documentation
[ ] My changes generate no new warnings
[ ] I have added tests that prove my fix is effective or that my feature works
[ ] New and existing unit tests pass locally with my changes
[x] I have successfully run all unit tests on Windows
[x] I have successfully run all unit tests on Linux

Additional Context

Add any other context, screenshots, or information about the pull request here.

iron-software / IronSoftware.System.Drawing