Add support for new CodeBuild images and dotnet 8

[techthoughts2]

Description

New codebuild images are now available and buildspec supports dotnet 8.

https://docs.aws.amazon.com/codebuild/latest/userguide/build-env-ref-available.html

Describe the solution you'd like

Add support for aws/codebuild/windows-base:2022-1.0 and dotnet 8 in buildspec.

[techthoughts2]

Failed to call UpdateProject, reason: Windows Server 2022 not supported for on-demand compute (Service: AWSCodeBuild; Status Code: 400; Error Code: InvalidInputException;

Server 2022 images still not natively supported.