Add support for .NET 8.0 and 9.0

[gep13]

Detailed Description

Update the TargetFrameworks of the GitReleaseManager projects to support .NET 8.0 and 9.0.

Context

GitReleaseManager version <= 0.19.0 supports .NET 6.0 and 7.0. Both of these versions are now out of support, and we should switch to providing support for the newer Frameworks versions, namely 8.0 and 9.0. At some point, towards the end of 2025, we should also look to add support for .NET 10.0, but that will be under a separate issue.

Possible Implementation

Modify the TargetFrameworks of each project to support the new desired frameworks. Some modifications to the build infrastructure may also be required.

Your Environment

N/A

[gittools-bot]

🎉 This issue has been resolved in version 0.20.0 🎉

The release is available on:

• GitHub Release
• NuGet Package
• Chocolatey Package
• .Net Global Tool

Your GitReleaseManager bot 📦🚀