tree 9c12690f9da46b6347628169762f203a9e6a2f63
parent 0ba20ef5de69923f8cab1aef0e1f6cb436e99413
author Sandy Zhang <sandyzhang@google.com> 1778635541 -0700
committer Copybara-Service <copybara-worker@google.com> 1779129538 -0700

Upgrade C# Protobuf projects to .NET 8.0.

This change updates the target frameworks for various C# projects within Protobuf to .NET 8.0, while also maintaining netstandard2.0 for the core library. Support for older frameworks like net45, net50, and netstandard1.1 has been removed.

This updates our project to match our support policy in https://github.com/google/oss-policies-info/blob/main/foundational-dotnet-support-matrix.md which actually dropped support for net45, net50, etc long ago.

PiperOrigin-RevId: 914580666