Hotfix September RC

[mee-ironsoftware]

Description

• Fixed issue can't create blank image with Background color.
• Upgrade ImageSharp.Image (2.1.5 netstandard2.0 and netstandard2.1, 3.0.1 net6.0+) and ImageSharp.Drawing (1.0.0) to latest version.
• Now NuGet package including ImageSharp.Drawing (1.0.0) as dependency.

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)
• [X] 🏗️ 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?

Create unit tests and also test the final package.

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
• [X] I have added tests that prove my fix is effective or that my feature works
• [X] 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

[mee-ironsoftware]

Oh damn, didn't realise we have nestandard 2.1 support already, nice! Looks great, awesome job!

@artem-iron Not sure is it work I thought you add netstandard2.1 into project. 🤣