V2.3.5: maintenance release aligned to KNet 2.7.8

This is a maintenance release of Entity Framework Core provider for Apache Kafka available for Entity Framework Core 6, 7 and 8.
Entity Framework Core provider for Apache Kafka comes with the following changes:

• MASES.EntityFrameworkCore.KNet: the core engine updates to KNet version 2.7.8 based on Apache Kafka 3.7.1
• MASES.EntityFrameworkCore.KNet.Serialization: no major changes
• MASES.EntityFrameworkCore.KNet.Serialization.Avro: no major changes
• MASES.EntityFrameworkCore.KNet.Serialization.Avro.Compiler: no major changes
• MASES.EntityFrameworkCore.KNet.Serialization.Protobuf: no major changes
• MASES.EntityFrameworkCore.KNet.Templates: no major changes

Official NuGet packages (*)

• MASES.EntityFrameworkCore.KNet
• MASES.EntityFrameworkCore.KNet.Templates
• MASES.EntityFrameworkCore.KNet.Serialization
• MASES.EntityFrameworkCore.KNet.Serialization.Avro
• MASES.EntityFrameworkCore.KNet.Serialization.Protobuf

(*) packages are also available on GitHub packages.

What's Changed

• Update KNet to 2.7.8, Google.Protobuf and version by @masesdevelopers in #272

Full Changelog: V2.3.4.0...V2.3.5.0